voidly
Data

Asia / Eastern Asia · CN

China.

A closer look at internet access.
The score, the signals, the source.

30-day index score

17/100

A dated sample-based score. Higher values indicate more interference in the index model.

Measurements in window
542
Original snapshot rank
#4

Snapshot fetched

Editorial context

Understand the backdrop.

China operates the Great Firewall, one of the most sophisticated internet censorship systems globally. Deep packet inspection, DNS poisoning, and IP blocking are used extensively.

Severe editorial tierstable editorial trend

This context is curated and undated. The trend is an editorial label, not a computed recent movement.

Country narrative, score basis and historical source

China operates the Great Firewall, one of the most sophisticated internet censorship systems globally. Deep packet inspection, DNS poisoning, and IP blocking are used extensively.

Editorial text is preserved as source context. Product recommendations do not guarantee unrestricted access. The source tier may differ from the measured score because the two have different definitions.

Score window: 30 days. Snapshot fetched . Content first seen . Upstream serve-time . These timestamps do not date the all-time OONI observations.

All-time measurements accumulate from an older source file without an observation window or timestamp. The all-time blocked ratio is not the confidence-shrunk score. Zero counts and absent fields are kept distinct.

All-time measurement archive

Accumulated measurements
880,281
Flagged blocked in archive
541,311
All-time blocked / total
61.5%
Stored protocol counts · separate historical fields
Web868,854
Telegram5,622
WhatsApp5,805

No collection date or complete-country coverage claim is attached to this archive. Protocol fields can be incomplete and need not sum to the historical total.

Country incident records

Start with an observation.

All country records
120 source records · 10 returned hereGenerated
  1. Censorship detected in CN

    ooni · CN-2026-0577

    17 source measurements · incident confidence 90.0%

    Type censorshipStatus suspectedSeverity critical
  2. Censorship detected in CN

    ooni · CN-2026-0576

    20 source measurements · incident confidence 90.0%

    Type censorshipStatus suspectedSeverity critical
  3. Censorship detected in CN

    ooni · CN-2026-0574

    20 source measurements · incident confidence 90.0%

    Type censorshipStatus suspectedSeverity critical
  4. Censorship detected in CN

    ooni · CN-2026-0571

    21 source measurements · incident confidence 90.0%

    Type censorshipStatus suspectedSeverity critical
  5. Censorship detected in CN

    ooni · CN-2026-0570

    21 source measurements · incident confidence 90.0%

    Type censorshipStatus suspectedSeverity critical
  6. Internet connectivity disruption in China

    ioda · CN-2026-0567

    1 source measurements · incident confidence 65.0%

    Record description

    IODA detected significant connectivity drop in China. 1 critical alerts recorded.

    Type disruptionStatus activeSeverity critical
  7. Censorship detected in CN

    ooni · CN-2026-0569

    20 source measurements · incident confidence 90.0%

    Type censorshipStatus suspectedSeverity critical
  8. Internet connectivity disruption in China

    ioda · CN-2026-0564

    4 source measurements · incident confidence 67.0%

    Record description

    IODA detected significant connectivity drop in China. 4 critical alerts recorded.

    Type disruptionStatus activeSeverity critical
  9. Censorship detected in CN

    ooni · CN-2026-0566

    22 source measurements · incident confidence 90.0%

    Type censorshipStatus suspectedSeverity critical
  10. Censorship detected in CN

    ooni · CN-2026-0562

    21 source measurements · incident confidence 90.0%

    Type censorshipStatus suspectedSeverity critical

Statuses come from each record; “active” is not inferred from severity or an absent end date. Incident confidence is a source field, not independent certainty that censorship occurred.

Evidence sources, query scope and dates
  • ooni: named by 8 returned incident records
  • ioda: named by 2 returned incident records

This is the source mix in the latest returned incident sample, not independent corroboration of the country score. A record can name multiple sources; the counts can overlap.

Dataset version: 2026.09.11. Malformed rows omitted: 0. All readable returned records appear above; each links to its complete evidence and citation page.

Measurement context

Know what is observed.

Quality methods

Current country response

Source branch
OONI response
OONI measurements
19,838
Sample anomaly rate
66.7%
Source confirmed-rate field
0.0%
Measurement source updated

An anomaly is a measurement result requiring interpretation. These country API fields use a different basis from the dated, confidence-shrunk index score.

Services named by this API response
WhatsAppTorSignalWeb AccessTelegram

Names may be tests or services. Inclusion alone does not establish complete blocking.

Country API basis and complete response

Source generated: . This is a source timestamp, not proof that every underlying observation is current.

Open the source response

Complete returned record
{
  "@context": "https://schema.org",
  "@type": "Country",
  "name": "China",
  "identifier": "CN",
  "url": "https://voidly.ai/censorship-index/cn",
  "additionalProperty": [
    {
      "@type": "PropertyValue",
      "name": "Censorship Score",
      "value": 67,
      "description": "0-100 scale where 100 = total internet censorship"
    },
    {
      "@type": "PropertyValue",
      "name": "Anomaly Rate",
      "value": 0.6671035386631717
    },
    {
      "@type": "PropertyValue",
      "name": "Measurement Count",
      "value": 19838
    }
  ],
  "data": {
    "country": "CN",
    "name": "China",
    "flag": "🇨🇳",
    "region": "Asia",
    "timestamp": "2026-09-11T04:03:18.849Z",
    "status": "high",
    "score": 67,
    "categoryScores": {},
    "blockedSites": [],
    "affectedServices": [
      "WhatsApp",
      "Tor",
      "Signal",
      "Web Access",
      "Telegram"
    ],
    "voidlyProbes": {
      "total": 0,
      "successful": 0,
      "blocked": 0
    },
    "ooni": {
      "status": "partial_outage",
      "anomalyRate": 0.6671035386631717,
      "confirmedRate": 0.00035285815102328866,
      "measurementCount": 19838,
      "affectedServices": [
        "WhatsApp",
        "Tor",
        "Signal",
        "Web Access",
        "Telegram"
      ],
      "lastUpdated": "2026-09-11T03:15:33.795Z"
    },
    "activeIncidents": []
  },
  "dataSource": "live_ooni",
  "source": "Voidly Global Censorship Index",
  "lastUpdated": "2026-09-11T04:03:32.480Z"
}

Country measurement quality

Measurement confidence
74/100 · high
30-day source measurements
3,511
Distinct measured domains
1,087
Reported source count
3
Hours since measured
34.1

Quality measures evidence confidence, not censorship probability. A small or absent sample cannot establish country-wide access. Quality generated: .

Quality source
Country-origin probes and global network status

Country-origin probe records: Unavailable. Flagged in that sample: Unavailable (Unavailable).

Global core + community active nodes: 40. Core active nodes: 15. Global probes in the last 24 hours: 144,200. Network source updated: .

Global infrastructure totals do not prove that this country was tested from every location. A node’s reported status and country reflect network infrastructure, not national internet freedom.

No country-origin nodes were returned in this network response.

Model outlook

Read the horizon.

Drivers & similar episodes

7-day event probability

9.2%

A censorship or connectivity event within seven days of the model’s as-of date, relative to the country’s baseline. It does not predict an exact shutdown date or measure standing freedom.

Model: honest_forecast_v1
Model as-of date:
Source decision threshold: 62.5%

7-day model, legacy trajectory and full source

Source generated: . This is a source timestamp, not proof that every underlying observation is current.

fixed in-sample model confidence, NOT a per-forecast calibrated probability

Use for cross-country RISK RANKING, not precise within-country day-of-shutdown timing.

This forecast scores the ONSET of a new recorded incident, not how censored a country already is. A permanently and stably blocked network generates no new anomaly, so it scores LOW. Measured 2026-07-31: China 0.015 and India 0.023 both rank BELOW Denmark 0.062 — China is probed 30/30 days across 836 domains and has logged nothing for 71 days, while Denmark is probed 2/30 days. A low score here means 'no CHANGE expected', never 'this country is free'. For standing severity use /v1/atlas/score-v2 or the censorship index instead.

Training ROC AUC 0.954 came from a RANDOM stratified split (consecutive country-days in an incident window are near-duplicates, inflating it). No target leakage: features use [date-7,date], label uses [date+1,date+7].

~0.85-0.90 (dual-holdout temporal gate)

ML_LEAKAGE_AUDIT.md (forecast v1/7day row).

Open the source response

Complete returned record
{
  "aci": {
    "active": true,
    "alpha": 0.078,
    "empirical_coverage": 0.8991,
    "last_updated": "2026-09-11T03:45:01.557851+00:00",
    "n_observations": 2518,
    "q_applied": 0.35,
    "q_raw": 0.95
  },
  "aci_alpha": 0.078,
  "confidence": 0.85,
  "country": "CN",
  "country_name": "China",
  "covered": true,
  "forecast": [
    {
      "date": "2026-09-11",
      "day": 0,
      "drivers": [],
      "risk": 0.01
    },
    {
      "date": "2026-09-12",
      "day": 1,
      "drivers": [],
      "risk": 0.01
    },
    {
      "date": "2026-09-13",
      "day": 2,
      "drivers": [],
      "risk": 0.01
    },
    {
      "date": "2026-09-14",
      "day": 3,
      "drivers": [],
      "risk": 0.028
    },
    {
      "date": "2026-09-15",
      "day": 4,
      "drivers": [],
      "risk": 0.014
    },
    {
      "date": "2026-09-16",
      "day": 5,
      "drivers": [],
      "risk": 0.013
    },
    {
      "date": "2026-09-17",
      "day": 6,
      "drivers": [],
      "risk": 0.044
    },
    {
      "date": "2026-09-18",
      "day": 7,
      "drivers": [],
      "risk": 0.043
    }
  ],
  "forecast_trajectory_note": "summary.max_risk is now the independently-validated honest 7-day event probability. The per-day forecast[] trajectory is the legacy v1 illustrative shape (NOT independently validated) — use honest_forecast for the headline; the v1 value is kept as max_risk_v1_leaky.",
  "generated_at": "2026-09-11T04:03:33.067640",
  "honest_caveat": {
    "confidence_is": "fixed in-sample model confidence, NOT a per-forecast calibrated probability",
    "correct_use": "Use for cross-country RISK RANKING, not precise within-country day-of-shutdown timing.",
    "detects_change_not_state": "This forecast scores the ONSET of a new recorded incident, not how censored a country already is. A permanently and stably blocked network generates no new anomaly, so it scores LOW. Measured 2026-07-31: China 0.015 and India 0.023 both rank BELOW Denmark 0.062 — China is probed 30/30 days across 836 domains and has logged nothing for 71 days, while Denmark is probed 2/30 days. A low score here means 'no CHANGE expected', never 'this country is free'. For standing severity use /v1/atlas/score-v2 or the censorship index instead.",
    "headline_auc_note": "Training ROC AUC 0.954 came from a RANDOM stratified split (consecutive country-days in an incident window are near-duplicates, inflating it). No target leakage: features use [date-7,date], label uses [date+1,date+7].",
    "honest_temporal_holdout_auc": "~0.85-0.90 (dual-holdout temporal gate)",
    "live_forward_accountability": [
      "GET /v1/sentinel/accuracy (rolling 30-day precision/recall; currently self-reported degraded)",
      "GET /v1/forecast/onset-skill (honest onset / forward skill)"
    ],
    "source": "ML_LEAKAGE_AUDIT.md (forecast v1/7day row)."
  },
  "honest_forecast": {
    "as_of": "2026-09-09",
    "flag": false,
    "is_headline_source": true,
    "probability": 0.0924,
    "recommended_threshold": 0.625,
    "risk_band": "low",
    "semantics": "probability of a censorship/connectivity EVENT in the next 7 days (country-relative z-score label)",
    "validation": "Independent OONI-grounded + leakage-free. Rolling-origin AUC ~0.815, PR-AUC ~0.29; beats persistence/climatology in all 9 temporal folds; LOCO beats persistence 49/51 countries. See /v1/forecast/honest/info."
  },
  "interval_90": [
    0,
    0.39399999999999996
  ],
  "model_version": "honest_forecast_v1",
  "summary": {
    "avg_risk": 0.022,
    "key_drivers": [],
    "max_risk": 0.0924,
    "max_risk_day": 6,
    "max_risk_v1_leaky": 0.044
  },
  "top_features": [
    {
      "contribution": -0.0213,
      "direction": "down",
      "name": "ooni_anomaly_7d",
      "source": "model"
    },
    {
      "contribution": -0.0198,
      "direction": "down",
      "name": "month",
      "source": "model"
    },
    {
      "contribution": 0.0163,
      "direction": "up",
      "name": "block_rate_roll7_mean",
      "source": "model"
    }
  ],
  "top_features_per_day": [
    {
      "base_prob": 0,
      "date": "2026-09-11",
      "day": 0,
      "risk": 0.01,
      "top_features": [
        {
          "contribution": -0.0213,
          "direction": "down",
          "name": "ooni_anomaly_7d",
          "source": "model"
        },
        {
          "contribution": -0.0198,
          "direction": "down",
          "name": "month",
          "source": "model"
        },
        {
          "contribution": 0.0163,
          "direction": "up",
          "name": "block_rate_roll7_mean",
          "source": "model"
        }
      ]
    },
    {
      "base_prob": 0,
      "date": "2026-09-12",
      "day": 1,
      "risk": 0.01,
      "top_features": [
        {
          "contribution": -0.0213,
          "direction": "down",
          "name": "ooni_anomaly_7d",
          "source": "model"
        },
        {
          "contribution": -0.0198,
          "direction": "down",
          "name": "month",
          "source": "model"
        },
        {
          "contribution": 0.0163,
          "direction": "up",
          "name": "block_rate_roll7_mean",
          "source": "model"
        }
      ]
    },
    {
      "base_prob": 0,
      "date": "2026-09-13",
      "day": 2,
      "risk": 0.01,
      "top_features": [
        {
          "contribution": -0.0213,
          "direction": "down",
          "name": "ooni_anomaly_7d",
          "source": "model"
        },
        {
          "contribution": -0.0198,
          "direction": "down",
          "name": "month",
          "source": "model"
        },
        {
          "contribution": 0.0163,
          "direction": "up",
          "name": "block_rate_roll7_mean",
          "source": "model"
        }
      ]
    },
    {
      "base_prob": 0,
      "date": "2026-09-14",
      "day": 3,
      "risk": 0.028,
      "top_features": [
        {
          "contribution": -0.0213,
          "direction": "down",
          "name": "ooni_anomaly_7d",
          "source": "model"
        },
        {
          "contribution": -0.0198,
          "direction": "down",
          "name": "month",
          "source": "model"
        },
        {
          "contribution": 0.0163,
          "direction": "up",
          "name": "block_rate_roll7_mean",
          "source": "model"
        }
      ]
    },
    {
      "base_prob": 0,
      "date": "2026-09-15",
      "day": 4,
      "risk": 0.014,
      "top_features": [
        {
          "contribution": -0.0213,
          "direction": "down",
          "name": "ooni_anomaly_7d",
          "source": "model"
        },
        {
          "contribution": 0.02,
          "direction": "up",
          "name": "day_decay_t+4",
          "source": "overlay"
        },
        {
          "contribution": -0.0198,
          "direction": "down",
          "name": "month",
          "source": "model"
        }
      ]
    },
    {
      "base_prob": 0,
      "date": "2026-09-16",
      "day": 5,
      "risk": 0.013,
      "top_features": [
        {
          "contribution": 0.025,
          "direction": "up",
          "name": "day_decay_t+5",
          "source": "overlay"
        },
        {
          "contribution": -0.0213,
          "direction": "down",
          "name": "ooni_anomaly_7d",
          "source": "model"
        },
        {
          "contribution": -0.0198,
          "direction": "down",
          "name": "month",
          "source": "model"
        }
      ]
    },
    {
      "base_prob": 0,
      "date": "2026-09-17",
      "day": 6,
      "risk": 0.044,
      "top_features": [
        {
          "contribution": 0.03,
          "direction": "up",
          "name": "day_decay_t+6",
          "source": "overlay"
        },
        {
          "contribution": -0.0213,
          "direction": "down",
          "name": "ooni_anomaly_7d",
          "source": "model"
        },
        {
          "contribution": -0.0198,
          "direction": "down",
          "name": "month",
          "source": "model"
        }
      ]
    },
    {
      "base_prob": 0,
      "date": "2026-09-18",
      "day": 7,
      "risk": 0.043,
      "top_features": [
        {
          "contribution": 0.035,
          "direction": "up",
          "name": "day_decay_t+7",
          "source": "overlay"
        },
        {
          "contribution": -0.0213,
          "direction": "down",
          "name": "ooni_anomaly_7d",
          "source": "model"
        },
        {
          "contribution": -0.0198,
          "direction": "down",
          "name": "month",
          "source": "model"
        }
      ]
    }
  ]
}
Legacy daily illustration · 8 points

The returned daily shape belongs to legacy v1. It is not independently validated and does not describe the honest 7-day headline model above. Its peak day, fixed confidence and interval must not be attached to that headline.

summary.max_risk is now the independently-validated honest 7-day event probability. The per-day forecast[] trajectory is the legacy v1 illustrative shape (NOT independently validated) — use honest_forecast for the headline; the v1 value is kept as max_risk_v1_leaky.

DateLegacy valueSource drivers
2026-09-111.0%
2026-09-121.0%
2026-09-131.0%
2026-09-142.8%
2026-09-151.4%
2026-09-161.3%
2026-09-174.4%
2026-09-184.3%
Legacy forecast evaluation

Original display confidence field: 85.0%. The source describes this as fixed in-sample model confidence, not calibrated per-forecast certainty.

Three horizons. Visible uncertainty.

Separate multi-horizon model. Each mark is the point estimate; its bar is the source’s 90% conformal interval.

1d

22.1% · 90% interval 11.4%–32.8%

7d

35.6% · 90% interval 2.3%–69.0%

30d

95.2% · 90% interval 45.2%–100.0%

Model: multi-horizon-h-v1. Longer-horizon intervals can be very wide; these estimates do not support precise within-country timing.

Source consistency: within the model’s monotonicity tolerance.

Per-horizon breakdown
Multi-horizon limitations, features and source

Source generated: . This is a source timestamp, not proof that every underlying observation is current.

AUC (e.g. 1d ~0.91) OVERSTATES usefulness — per-horizon F1 is much lower (~0.45 at 1d) because shutdown-positive days are rare and the 7/30-day target is a sliding window that is highly autocorrelated day-to-day (a leakage-prone label).

Conformal bands widen sharply at 30d (often ~[0.45, 1.0]) — the 30d point estimate is low-confidence.

Use for cross-country RISK RANKING within the watched panel, NOT precise within-country day-of-shutdown timing. Data-backed for covered countries only (see the 'covered' flag).

This forecast scores the ONSET of a new recorded incident, not how censored a country already is. A permanently and stably blocked network generates no new anomaly, so it scores LOW. Measured 2026-07-31: China 0.015 and India 0.023 both rank BELOW Denmark 0.062 — China is probed 30/30 days across 836 domains and has logged nothing for 71 days, while Denmark is probed 2/30 days. A low score here means 'no CHANGE expected', never 'this country is free'. For standing severity use /v1/atlas/score-v2 or the censorship index instead.

Per-horizon AUC is leave-one-country-out on the SPOTLIGHT (watched) panel, NOT all 130 countries; see /v1/forecast/multi-horizon/info for the per-horizon F1.

Open the source response

Complete returned record
{
  "consistency": {
    "monotonic": true,
    "violations": []
  },
  "country": "CN",
  "country_name": "China",
  "covered": true,
  "generated_at": "2026-09-11T04:03:33.333762",
  "honest_caveat": {
    "auc_caveat": "AUC (e.g. 1d ~0.91) OVERSTATES usefulness — per-horizon F1 is much lower (~0.45 at 1d) because shutdown-positive days are rare and the 7/30-day target is a sliding window that is highly autocorrelated day-to-day (a leakage-prone label).",
    "conformal_caveat": "Conformal bands widen sharply at 30d (often ~[0.45, 1.0]) — the 30d point estimate is low-confidence.",
    "correct_use": "Use for cross-country RISK RANKING within the watched panel, NOT precise within-country day-of-shutdown timing. Data-backed for covered countries only (see the 'covered' flag).",
    "detects_change_not_state": "This forecast scores the ONSET of a new recorded incident, not how censored a country already is. A permanently and stably blocked network generates no new anomaly, so it scores LOW. Measured 2026-07-31: China 0.015 and India 0.023 both rank BELOW Denmark 0.062 — China is probed 30/30 days across 836 domains and has logged nothing for 71 days, while Denmark is probed 2/30 days. A low score here means 'no CHANGE expected', never 'this country is free'. For standing severity use /v1/atlas/score-v2 or the censorship index instead.",
    "metrics_are": "Per-horizon AUC is leave-one-country-out on the SPOTLIGHT (watched) panel, NOT all 130 countries; see /v1/forecast/multi-horizon/info for the per-horizon F1."
  },
  "honest_horizons": [
    "1d",
    "30d",
    "7d"
  ],
  "horizons": {
    "1d": {
      "conformal_90": {
        "halfwidth": 0.1071,
        "lower": 0.1139,
        "upper": 0.3282
      },
      "horizon": "1d",
      "horizon_days": 1,
      "probability": 0.221,
      "top_features": [
        {
          "feature": "week_of_year",
          "shap_value": -0.9128338098526001
        },
        {
          "feature": "risk_tier",
          "shap_value": -0.27742817997932434
        },
        {
          "feature": "recent_shutdown",
          "shap_value": -0.2094491720199585
        },
        {
          "feature": "is_friday",
          "shap_value": -0.158019557595253
        },
        {
          "feature": "month",
          "shap_value": -0.1427607238292694
        }
      ]
    },
    "30d": {
      "conformal_90": {
        "halfwidth": 0.5,
        "lower": 0.4521,
        "upper": 1
      },
      "horizon": "30d",
      "horizon_days": 30,
      "probability": 0.9521,
      "top_features": [
        {
          "feature": "week_of_year",
          "shap_value": -0.7613611817359924
        },
        {
          "feature": "block_rate_roll14_mean",
          "shap_value": 0.554466724395752
        },
        {
          "feature": "gdelt_unrest_30d",
          "shap_value": 0.28548720479011536
        },
        {
          "feature": "risk_tier",
          "shap_value": -0.2508034110069275
        },
        {
          "feature": "recent_shutdown",
          "shap_value": -0.223228320479393
        }
      ]
    },
    "7d": {
      "conformal_90": {
        "halfwidth": 0.3333,
        "lower": 0.023,
        "upper": 0.6897
      },
      "horizon": "7d",
      "horizon_days": 7,
      "probability": 0.3564,
      "top_features": [
        {
          "feature": "week_of_year",
          "shap_value": -0.812372624874115
        },
        {
          "feature": "risk_tier",
          "shap_value": -0.6151587963104248
        },
        {
          "feature": "block_rate_roll7_std",
          "shap_value": -0.2404497116804123
        },
        {
          "feature": "month",
          "shap_value": -0.14797118306159973
        },
        {
          "feature": "block_rate_roll7_mean",
          "shap_value": 0.09331649541854858
        }
      ]
    }
  },
  "model_version": "multi-horizon-h-v1"
}

Model evaluation and labels differ. Honest 7-day model · Multi-horizon evaluation. An API response date is not the date of the underlying training data.

Additional signals

More context. Separate models.

Model changelog

Each source answers a different question. Missing signals stay visible.

Voidly composite score

38.91 / 100

Separate from the index score. A weighted signal composite; sparse evidence can pull it toward zero.

+0.07 points vs source’s previous smoothed value.

Source marks its age within the stated freshness limit.

Score method
Source, dates and limitations

Source generated: . This is a source timestamp, not proof that every underlying observation is current.

  • Weights are hand-tuned, not learned end-to-end.
  • The seven components are correlated — the weighted sum is not a pure information-theoretic average.
  • 'Intensity' is editorial framing. The metric is a censorship-risk-weighted average across live signals, not a direct user-facing measurement.
  • Mobile-blocking skew is approximated from OONI test_name= URL params and gated to countries with at least 10 probes in the last 7 days.
  • The first 3 days after rollout the smoothed series equals the raw score (cold start); deltas stabilize after that.
  • Countries with sparse data (low OONI coverage, no recent incidents, no DBSCAN window) will float near 0 not because they are uncensored but because the signals collapse there.

Open the source response

Complete returned record
{
  "age_hours": 23.46,
  "components_normalized": {
    "agreement": 0.4191,
    "classifier": 0.0035,
    "dbscan": 1,
    "domain_div": 0.7178,
    "forecast": 0.1127,
    "incident_rate": 0,
    "mobile_skew": 0.9412
  },
  "components_points": {
    "agreement": 5.24,
    "classifier": 0.13,
    "dbscan": 18.75,
    "domain_div": 8.97,
    "incident_rate": 0,
    "mobile_skew": 5.88
  },
  "country": "CN",
  "country_name": "China",
  "delta_vs_yesterday": 0.07,
  "ema_status": "warm",
  "generated_at": "2026-09-10T04:35:58.851132+00:00",
  "honest_caveats": [
    "Weights are hand-tuned, not learned end-to-end.",
    "The seven components are correlated — the weighted sum is not a pure information-theoretic average.",
    "'Intensity' is editorial framing. The metric is a censorship-risk-weighted average across live signals, not a direct user-facing measurement.",
    "Mobile-blocking skew is approximated from OONI test_name= URL params and gated to countries with at least 10 probes in the last 7 days.",
    "The first 3 days after rollout the smoothed series equals the raw score (cold start); deltas stabilize after that.",
    "Countries with sparse data (low OONI coverage, no recent incidents, no DBSCAN window) will float near 0 not because they are uncensored but because the signals collapse there."
  ],
  "interpretation": "smoothed_score is what to put in a headline; raw_score is today's component sum before EMA. delta_vs_yesterday is the movement (positive = censorship intensifying).",
  "previous_raw_score": 38.95,
  "previous_smoothed_score": 38.84,
  "raw_score": 38.97,
  "raw_signals": {
    "agreement_n_sources": null,
    "agreement_rate_2plus": 0.4191,
    "classifier_date": null,
    "classifier_label": 0,
    "classifier_probability": 0.0035,
    "classifier_threshold": 0.5222,
    "classifier_version": "v3.3",
    "dbscan_anomaly_score_raw": 4.7465,
    "dbscan_date": "2026-09-08",
    "dbscan_is_anomaly": true,
    "forecast_key_drivers": [],
    "forecast_max_day": 6,
    "forecast_max_risk": 0.1127,
    "incidents_24h_censorship": 0,
    "incidents_24h_disruption": 0,
    "incidents_24h_weighted": 0,
    "mobile_skew": 0.4706,
    "ooni_mobile_probes_7d": 96,
    "ooni_probes_7d": 204,
    "unique_blocked_domains_30d": 44
  },
  "run_date": "2026-09-10",
  "schema": "voidly-score-country/v1",
  "sidecar_age_hr": 23.46,
  "smoothed_score": 38.91,
  "stale": false,
  "stale_after_hours": 26,
  "stale_field_note": "`stale` is three-valued: true / false / \"unknown\". \"unknown\" means the age could not be determined (missing or unparseable timestamp) and is NOT an assertion of freshness -- it is truthy on purpose so that a consumer testing the field falls to the cautious side. Check `stale_known` for a strict boolean and `stale_reason` for how the verdict was reached.",
  "stale_known": true,
  "stale_reason": "generated_at is 23.46h old, within the 26.00h threshold.",
  "weights": {
    "agreement": 0.125,
    "classifier": 0.375,
    "dbscan": 0.1875,
    "domain_div": 0.125,
    "incident_rate": 0.125,
    "mobile_skew": 0.0625
  }
}

Conditional incident duration

5 median days

Scenario: a critical censorship incident in China. This is not a timer for an existing incident.

Source interquartile range: 313 days.

Exploratory · source model is below its promotion threshold.

Model trained: . Censoring in training data: 78.4%.

Duration assumptions, request and source

Source generated: Date unavailable. This is a source timestamp, not proof that every underlying observation is current.

  • model below promote floor (c=0.55, n=343) — treat as exploratory
  • censoring rate in training set: 78%

This read-only inference endpoint requires a POST request:

POST https://api.voidly.ai/v1/forecast/duration
Content-Type: application/json

{
  "country": "CN",
  "severity": "critical",
  "incident_type": "censorship"
}

API documentation

Complete returned record
{
  "country": "CN",
  "features_used": {
    "continent_Africa": 0,
    "continent_Americas": 0,
    "continent_Asia": 1,
    "continent_Europe": 0,
    "continent_Oceania": 0,
    "country_risk_tier": 1,
    "first_seen_month": 9,
    "first_seen_year": 2026,
    "prior_shutdowns_count_24mo": 45,
    "severity_critical": 1,
    "severity_warning": 0,
    "type_censorship": 1,
    "type_mixed": 0
  },
  "honest_caveats": [
    "model below promote floor (c=0.55, n=343) — treat as exploratory",
    "censoring rate in training set: 78%"
  ],
  "incident_type": "censorship",
  "iqr_days": 10,
  "median_days": 5,
  "median_hours": 120,
  "model": {
    "censoring_rate": 0.7842565597667639,
    "class": "RandomSurvivalForest",
    "feature_names": [
      "country_risk_tier",
      "first_seen_year",
      "first_seen_month",
      "prior_shutdowns_count_24mo",
      "continent_Africa",
      "continent_Americas",
      "continent_Asia",
      "continent_Europe",
      "continent_Oceania",
      "severity_critical",
      "severity_warning",
      "type_censorship",
      "type_mixed"
    ],
    "name": "shutdown_duration_rsf_v1",
    "trained_at": "2026-05-21T12:01:30.451711Z"
  },
  "model_c_index": 0.5455,
  "n_training_samples": 343,
  "p25_hours": 72,
  "p75_hours": 312,
  "promoted": false,
  "severity": "critical",
  "survival_curve_summary": [
    {
      "hours": 48,
      "survival_prob": 0.9
    },
    {
      "hours": 72,
      "survival_prob": 0.75
    },
    {
      "hours": 120,
      "survival_prob": 0.5
    },
    {
      "hours": 312,
      "survival_prob": 0.25
    },
    {
      "hours": 5952,
      "survival_prob": 0.1
    }
  ]
}

Contagion follow-risk

44.3% source ranking score

Trigger attribution is probabilistic, not causal. Noisy-OR aggregation can overstate risk when triggers share a cause.

Horizon: 3 days. Source baseline: 13.7%.

Source, dates and limitations

Source generated: . This is a source timestamp, not proof that every underlying observation is current.

  • Inherits contagion-chain v1 model uncertainty (primary horizon AUC ~0.67).
  • 24-48h is a TIGHT window. Most observed contagion patterns are 3-7d. This endpoint uses the shortest supported horizon (3d) as the closest proxy.
  • A country on the watchlist does NOT mean it WILL block. The score is a relative ranking; absolute calibration of the underlying pairwise classifier is moderate (Brier ~0.14 at 3d).
  • Trigger attribution is probabilistic (per-pair model output), not causal. Two countries spiking around the same time can also reflect shared upstream outages, regional politics, or coincidence.
  • Noisy-OR aggregation assumes triggers act independently — this overestimates risk when multiple triggers share an underlying driver.
  • Base-rate adjustment subtracts (base_daily * horizon) to discount countries that block every day anyway. This is a heuristic, not a matched counterfactual.
  • With zero active triggers in the last 48h, watchlist is empty by design.

Open the source response

Complete returned record
{
  "attribution": [
    {
      "p_follow_3d": 0.2973,
      "pair_coevents_365d": 24,
      "same_auth_cluster": false,
      "same_region": false,
      "trigger": "SG",
      "trigger_date": "2026-09-09T20:52:00"
    },
    {
      "p_follow_3d": 0.2897,
      "pair_coevents_365d": 19,
      "same_auth_cluster": false,
      "same_region": false,
      "trigger": "TR",
      "trigger_date": "2026-09-09T00:20:00"
    },
    {
      "p_follow_3d": 0.1593,
      "pair_coevents_365d": 27,
      "same_auth_cluster": false,
      "same_region": false,
      "trigger": "BD",
      "trigger_date": "2026-09-09T13:10:00"
    }
  ],
  "base_prior_3d": 0.1372,
  "base_rate_daily": 0.04573,
  "country": "CN",
  "follower_events_30d": 29,
  "generated_at": "2026-09-11T00:17:02.740601+00:00",
  "honest_caveats": [
    "Inherits contagion-chain v1 model uncertainty (primary horizon AUC ~0.67).",
    "24-48h is a TIGHT window. Most observed contagion patterns are 3-7d. This endpoint uses the shortest supported horizon (3d) as the closest proxy.",
    "A country on the watchlist does NOT mean it WILL block. The score is a relative ranking; absolute calibration of the underlying pairwise classifier is moderate (Brier ~0.14 at 3d).",
    "Trigger attribution is probabilistic (per-pair model output), not causal. Two countries spiking around the same time can also reflect shared upstream outages, regional politics, or coincidence.",
    "Noisy-OR aggregation assumes triggers act independently — this overestimates risk when multiple triggers share an underlying driver.",
    "Base-rate adjustment subtracts (base_daily * horizon) to discount countries that block every day anyway. This is a heuristic, not a matched counterfactual.",
    "With zero active triggers in the last 48h, watchlist is empty by design."
  ],
  "horizon_days": 3,
  "n_active_triggers": 3,
  "noisy_or": 0.5804,
  "rank": 17,
  "score": 0.4432,
  "status": "on_watchlist",
  "trigger_window_hours": 48,
  "underlying_model": {
    "name": "contagion-chain-v1 (pairwise XGBoost)",
    "primary_horizon_auc_h7": 0.6696949571962517,
    "sidecar": "/opt/voidly-ai/ml-deploy/contagion_chain_v1.json"
  }
}

Behavioral neighbors

Similarity of measured blocking patterns, not governments or intent. Sparse feature coverage lowers confidence.

Source, dates and limitations

Source generated: . This is a source timestamp, not proof that every underlying observation is current.

Similarity here is BEHAVIORAL, not political. Two countries are near each other because they BLOCK in similar ways — comparable method mix, target categories and temporal shape — which does NOT imply comparable governments, laws or intent. A stable democracy with seasonal sports-piracy blocks can sit near an authoritarian state if their measured blocking footprints rhyme. Feature vectors are SPARSE for low-coverage countries (flagged sparse=true, <3 of 5 behavioral feature families populated) — their neighbors are dominated by regime/continent/cohort one-hots and should be read with low confidence. The 2D graph projection (UMAP or PCA) compresses a 32-dimensional space to 2 and loses information — use the cosine `neighbors` list, not pixel distance in the projection, for any quantitative claim.

Open the source response

Complete returned record
{
  "country": "CN",
  "generated_at": "2026-09-07T05:10:09.714350+00:00",
  "honest_caveat": "Similarity here is BEHAVIORAL, not political. Two countries are near each other because they BLOCK in similar ways — comparable method mix, target categories and temporal shape — which does NOT imply comparable governments, laws or intent. A stable democracy with seasonal sports-piracy blocks can sit near an authoritarian state if their measured blocking footprints rhyme. Feature vectors are SPARSE for low-coverage countries (flagged sparse=true, <3 of 5 behavioral feature families populated) — their neighbors are dominated by regime/continent/cohort one-hots and should be read with low confidence. The 2D graph projection (UMAP or PCA) compresses a 32-dimensional space to 2 and loses information — use the cosine `neighbors` list, not pixel distance in the projection, for any quantitative claim.",
  "method": "standardized-cosine + pca",
  "nearest": [
    {
      "continent": "Asia",
      "country": "IR",
      "risk_tier": 1,
      "similarity": 0.8724,
      "sparse": false
    },
    {
      "continent": "Asia",
      "country": "VN",
      "risk_tier": 2,
      "similarity": 0.8368,
      "sparse": false
    },
    {
      "continent": "Asia",
      "country": "AE",
      "risk_tier": 2,
      "similarity": 0.8296,
      "sparse": false
    },
    {
      "continent": "Asia",
      "country": "TH",
      "risk_tier": 2,
      "similarity": 0.8039,
      "sparse": false
    },
    {
      "continent": "Asia",
      "country": "BD",
      "risk_tier": 2,
      "similarity": 0.7904,
      "sparse": false
    },
    {
      "continent": "Asia",
      "country": "TR",
      "risk_tier": 2,
      "similarity": 0.7746,
      "sparse": false
    },
    {
      "continent": "Asia",
      "country": "PK",
      "risk_tier": 2,
      "similarity": 0.7744,
      "sparse": false
    },
    {
      "continent": "Asia",
      "country": "SA",
      "risk_tier": 2,
      "similarity": 0.7449,
      "sparse": false
    },
    {
      "continent": "Asia",
      "country": "MM",
      "risk_tier": 2,
      "similarity": 0.7445,
      "sparse": false
    },
    {
      "continent": "Europe",
      "country": "RU",
      "risk_tier": 2,
      "similarity": 0.7007,
      "sparse": false
    }
  ],
  "query_meta": {
    "continent": "Asia",
    "country": "CN",
    "dtw_cohort": 3,
    "evidence_count": 12617,
    "feature_families_present": 5,
    "feature_families_total": 5,
    "risk_tier": 1,
    "sparse": false
  },
  "version": "v1"
}

Evidence grade distribution

A: 27B: 88C: 0F: 1

Grades are source rubric categories. They do not independently establish deliberate blocking.

Grading rubric
Source, dates and limitations

Source generated: Date unavailable. This is a source timestamp, not proof that every underlying observation is current.

Open the source response

Complete returned record
{
  "distribution": {
    "A": 27,
    "B": 88,
    "C": 0,
    "F": 1
  },
  "filters": {
    "country": "CN",
    "incident_type": null
  },
  "rules": {
    "A": "else",
    "B": "n_sources >= 1 AND avg_confidence >= 0.7",
    "C": "n_sources >= 2 AND n_domains >= 3",
    "F": "duration_hours >= 24 AND n_sources >= 2"
  },
  "total": 120,
  "ungraded": 4
}

Measured circumvention results

Generic commercial VPN bootstrap

51.8% probe success · 1,201 probes · 30-day source window.

Probe success is an upper bound on real-user success. “Try first” is not a safety guarantee; results can become stale within hours.

Source verdict: partial.

Full measurement table
Required caveats, tool notes and complete results

Source generated: . This is a source timestamp, not proof that every underlying observation is current.

  • PROBE SUCCESS != REAL-USER SUCCESS. DPI vendors increasingly rate-limit real client traffic while letting OONI / Voidly synthetic measurement probes through. Success rates here are an UPPER BOUND on what a real user will see.
  • Recommendations can become stale within hours. Censorship adapts. If a try_first tool stops working, the next probe rotation (cron daily 06:00 UTC) will catch it but you will see it before we do.
  • 'Try first' is NOT 'safe'. It means 'highest measured success rate, highest probe confidence.' Operational security (unique device, throwaway account, no SIM, no DNS leak, etc.) is the USER's responsibility — none of that is captured here.
  • Domain-fronted tools (Snowflake, Lantern, Psiphon) are SYSTEMATICALLY UNDER-ESTIMATED. Bootstrap-domain probes do not measure the rotating tunnel endpoints those tools actually use.
  • Self-hosted WireGuard / OpenVPN on a private IP is INVISIBLE to OONI probes and is not represented here. If you have one, trust it over any commercial recommendation.
  • Tor rows roll up vanilla / obfs4 / Snowflake / Meek transports. Per-transport granularity needs raw OONI nettests, out of scope for v1.
  • DO NOT share this recommendation as a forum-shareable card without the caveat block. The do_not_share_card_without_caveats flag in the response is on by design.

Open the source response

Complete returned record
{
  "country_code": "CN",
  "coverage_note": "No tool in CN cleared the try_first bar (success >= 0.70 AND confidence >= 0.70). The headline recommendation falls back to the highest-ranked tool. Consider a self-hosted WireGuard / OpenVPN endpoint on a private IP, which is invisible to OONI and not represented here.",
  "do_not_share_card_without_caveats": true,
  "endpoints": {
    "info": "/v1/atlas/circumvention/info",
    "leaderboard": "/v1/atlas/evasion/leaderboard",
    "upstream_evasion_table": "/v1/atlas/evasion/CN"
  },
  "generated_at": "2026-09-10T06:00:04.838214+00:00",
  "headline_basis": "fallback",
  "headline_recommendation": {
    "category": "commercial-vpn-aggregate",
    "confidence": 0.99,
    "n_total_probes": 1201,
    "rank_score": 0.5046,
    "success_rate": 0.5179,
    "tool_name": "Generic commercial VPN bootstrap",
    "tool_note": "Aggregate over ProtonVPN, ExpressVPN, Mullvad, VPN Gate. Hides per-vendor variation. Look at the per-tool rows to see which specific vendor passes if any.",
    "tool_slug": "generic-vpn",
    "verdict": "partial"
  },
  "honest_caveats": [
    "PROBE SUCCESS != REAL-USER SUCCESS. DPI vendors increasingly rate-limit real client traffic while letting OONI / Voidly synthetic measurement probes through. Success rates here are an UPPER BOUND on what a real user will see.",
    "Recommendations can become stale within hours. Censorship adapts. If a try_first tool stops working, the next probe rotation (cron daily 06:00 UTC) will catch it but you will see it before we do.",
    "'Try first' is NOT 'safe'. It means 'highest measured success rate, highest probe confidence.' Operational security (unique device, throwaway account, no SIM, no DNS leak, etc.) is the USER's responsibility — none of that is captured here.",
    "Domain-fronted tools (Snowflake, Lantern, Psiphon) are SYSTEMATICALLY UNDER-ESTIMATED. Bootstrap-domain probes do not measure the rotating tunnel endpoints those tools actually use.",
    "Self-hosted WireGuard / OpenVPN on a private IP is INVISIBLE to OONI probes and is not represented here. If you have one, trust it over any commercial recommendation.",
    "Tor rows roll up vanilla / obfs4 / Snowflake / Meek transports. Per-transport granularity needs raw OONI nettests, out of scope for v1.",
    "DO NOT share this recommendation as a forum-shareable card without the caveat block. The do_not_share_card_without_caveats flag in the response is on by design."
  ],
  "informational_disclaimer": "This endpoint is INFORMATIONAL, not a safety guarantee. Probe success is an upper bound on real-user success. User assumes the risk of any tool selected from this ranking. 'Try first' does not mean 'safe' — it means 'highest measured success, highest probe confidence.'",
  "insufficient_coverage": false,
  "lookback_days": 30,
  "min_total_probes_floor": 100,
  "n_tools_measured": 5,
  "n_total_probes": 5154,
  "rank_formula": "success_rate * sqrt(confidence) * recency_decay",
  "schema": "voidly-circumvention-recommendation/v1",
  "tier_definitions": {
    "avoid": {
      "description": "High-confidence measurements show <10% probe success. Very likely blocked. Listed for transparency — do not trust the bootstrap path.",
      "label": "Avoid",
      "max_success_rate": 0.1,
      "min_confidence": 0.7
    },
    "fallback": {
      "description": "Either partial measured success (30%+) OR not enough probes to be sure. Worth trying if the try_first tools fail — but expect lower reliability.",
      "label": "Fallback",
      "max_confidence_for_uncertain": 0.5,
      "min_success_rate_lower": 0.3
    },
    "try_first": {
      "description": "High measured success rate AND high probe confidence. Still informational only — DPI vendors increasingly block real clients while letting measurement probes pass, so success_rate is an upper bound.",
      "label": "Try first",
      "min_confidence": 0.7,
      "min_success_rate": 0.7
    }
  },
  "tiers": {
    "avoid": [
      {
        "category": "p2p-circumvention",
        "confidence": 0.99,
        "n_total_probes": 1241,
        "rank_score": 0.0911,
        "success_rate": 0.0935,
        "tool_name": "Lantern",
        "tool_note": "Lantern bootstraps from getlantern.org but rotates endpoints aggressively after that. Bootstrap-domain block does not mean ongoing-connection block.",
        "tool_slug": "lantern",
        "verdict": "blocked"
      },
      {
        "category": "anonymity-network",
        "confidence": 0.99,
        "n_total_probes": 767,
        "rank_score": 0.0219,
        "success_rate": 0.0222,
        "tool_name": "Tor",
        "tool_note": "Tor uses obfs4 by default. If obfs4 fails, switch to the Snowflake bridge from inside the Tor Browser settings. The OONI tor test does NOT differentiate transports, so this row is the aggregate.",
        "tool_slug": "tor",
        "verdict": "blocked"
      }
    ],
    "fallback": [
      {
        "category": "commercial-vpn-aggregate",
        "confidence": 0.99,
        "n_total_probes": 1201,
        "rank_score": 0.5046,
        "success_rate": 0.5179,
        "tool_name": "Generic commercial VPN bootstrap",
        "tool_note": "Aggregate over ProtonVPN, ExpressVPN, Mullvad, VPN Gate. Hides per-vendor variation. Look at the per-tool rows to see which specific vendor passes if any.",
        "tool_slug": "generic-vpn",
        "verdict": "partial"
      },
      {
        "category": "commercial-vpn",
        "confidence": 0.99,
        "n_total_probes": 1201,
        "rank_score": 0.5046,
        "success_rate": 0.5179,
        "tool_name": "ProtonVPN",
        "tool_note": "Blocking protonvpn.com does NOT block all ProtonVPN tunnels. Individual WireGuard / OpenVPN endpoint IPs may stay reachable.",
        "tool_slug": "protonvpn",
        "verdict": "partial"
      },
      {
        "category": "vpn-proxy",
        "confidence": 0.99,
        "n_total_probes": 744,
        "rank_score": 0.2934,
        "success_rate": 0.3011,
        "tool_name": "Psiphon",
        "tool_note": "Psiphon ships a bundled server list — even if psiphon.ca is blocked, the app can usually bootstrap from cached entries.",
        "tool_slug": "psiphon",
        "verdict": "mostly-blocked"
      }
    ],
    "try_first": []
  },
  "tools_ranked": [
    {
      "block_rate": 0.4821,
      "blocking_methods": {
        "dns-blocking": 9,
        "http-blocking-tcp-reset": 7
      },
      "category": "commercial-vpn-aggregate",
      "confidence": 0.99,
      "confidence_band": "high",
      "domains_observed": [
        "protonvpn.com"
      ],
      "first_observed": "2026-08-12T00:00:00Z",
      "last_observed": "2026-09-09T00:00:00Z",
      "n_blocked_probes": 579,
      "n_successful_probes": 622,
      "n_total_probes": 1201,
      "n_unique_asns": 2,
      "rank_score": 0.5046,
      "recency_decay": 0.9792,
      "recency_decay_known": true,
      "recency_decay_note": null,
      "success_rate": 0.5179,
      "tier": "fallback",
      "tool_name": "Generic commercial VPN bootstrap",
      "tool_note": "Aggregate over ProtonVPN, ExpressVPN, Mullvad, VPN Gate. Hides per-vendor variation. Look at the per-tool rows to see which specific vendor passes if any.",
      "tool_slug": "generic-vpn",
      "verdict": "partial"
    },
    {
      "block_rate": 0.4821,
      "blocking_methods": {
        "dns-blocking": 9,
        "http-blocking-tcp-reset": 7
      },
      "category": "commercial-vpn",
      "confidence": 0.99,
      "confidence_band": "high",
      "domains_observed": [
        "protonvpn.com"
      ],
      "first_observed": "2026-08-12T00:00:00Z",
      "last_observed": "2026-09-09T00:00:00Z",
      "n_blocked_probes": 579,
      "n_successful_probes": 622,
      "n_total_probes": 1201,
      "n_unique_asns": 2,
      "rank_score": 0.5046,
      "recency_decay": 0.9792,
      "recency_decay_known": true,
      "recency_decay_note": null,
      "success_rate": 0.5179,
      "tier": "fallback",
      "tool_name": "ProtonVPN",
      "tool_note": "Blocking protonvpn.com does NOT block all ProtonVPN tunnels. Individual WireGuard / OpenVPN endpoint IPs may stay reachable.",
      "tool_slug": "protonvpn",
      "verdict": "partial"
    },
    {
      "block_rate": 0.6989,
      "blocking_methods": {
        "dns-blocking": 9,
        "http-blocking-tcp-reset": 10
      },
      "category": "vpn-proxy",
      "confidence": 0.99,
      "confidence_band": "high",
      "domains_observed": [
        "psiphon.ca"
      ],
      "first_observed": "2026-08-12T00:00:00Z",
      "last_observed": "2026-09-09T00:00:00Z",
      "n_blocked_probes": 520,
      "n_successful_probes": 224,
      "n_total_probes": 744,
      "n_unique_asns": 4,
      "rank_score": 0.2934,
      "recency_decay": 0.9792,
      "recency_decay_known": true,
      "recency_decay_note": null,
      "success_rate": 0.3011,
      "tier": "fallback",
      "tool_name": "Psiphon",
      "tool_note": "Psiphon ships a bundled server list — even if psiphon.ca is blocked, the app can usually bootstrap from cached entries.",
      "tool_slug": "psiphon",
      "verdict": "mostly-blocked"
    },
    {
      "block_rate": 0.9065,
      "blocking_methods": {
        "dns-blocking": 9,
        "http-blocking-tcp-reset": 17
      },
      "category": "p2p-circumvention",
      "confidence": 0.99,
      "confidence_band": "high",
      "domains_observed": [
        "getlantern.org"
      ],
      "first_observed": "2026-08-12T00:00:00Z",
      "last_observed": "2026-09-09T00:00:00Z",
      "n_blocked_probes": 1125,
      "n_successful_probes": 116,
      "n_total_probes": 1241,
      "n_unique_asns": 5,
      "rank_score": 0.0911,
      "recency_decay": 0.9792,
      "recency_decay_known": true,
      "recency_decay_note": null,
      "success_rate": 0.0935,
      "tier": "avoid",
      "tool_name": "Lantern",
      "tool_note": "Lantern bootstraps from getlantern.org but rotates endpoints aggressively after that. Bootstrap-domain block does not mean ongoing-connection block.",
      "tool_slug": "lantern",
      "verdict": "blocked"
    },
    {
      "block_rate": 0.9778,
      "blocking_methods": {
        "tor-blocking": 114
      },
      "category": "anonymity-network",
      "confidence": 0.99,
      "confidence_band": "high",
      "domains_observed": [],
      "first_observed": "2026-08-11T12:00:00Z",
      "last_observed": "2026-09-09T18:00:00Z",
      "n_blocked_probes": 750,
      "n_successful_probes": 17,
      "n_total_probes": 767,
      "n_unique_asns": 0,
      "rank_score": 0.0219,
      "recency_decay": 0.9917,
      "recency_decay_known": true,
      "recency_decay_note": null,
      "success_rate": 0.0222,
      "tier": "avoid",
      "tool_name": "Tor",
      "tool_note": "Tor uses obfs4 by default. If obfs4 fails, switch to the Snowflake bridge from inside the Tor Browser settings. The OONI tor test does NOT differentiate transports, so this row is the aggregate.",
      "tool_slug": "tor",
      "verdict": "blocked"
    }
  ]
}

Network variation

Look inside the country.

Global ISP index

Network-level records add detail that a country score cannot show.

All returned ISP records for CN
ISPComposite scoreSample block rateMethods / categoriesDomains / evidence
AS58866
AS58,866
93.5100.0%tcp-reset
NEWS · GRP · MMED · HOST · COMT · AIML · ANON · SRCH
17 domains
41 evidence items
AS137702 (CHINATELECOM-JIANGSU-NANJING-IDC)
AS137,702
92.5100.0%tcp-reset
NEWS · GRP · ANON · SRCH · COMT · MMED · AIML
22 domains
315 evidence items
AS146812
AS146,812
92.5100.0%tcp-reset
NEWS · GRP · ANON · COMT · MMED · SRCH · AIML
23 domains
1,124 evidence items
AS62468 (HKCLOUDX)
AS62,468
89.5100.0%tcp-reset
NEWS · GRP · MMED · HOST · COMT · ANON · SRCH
14 domains
121 evidence items
AS136190 (CHINATELECOM-ZHEJIANG-JINHUA-IDC)
AS136,190
86.5100.0%tcp-reset
NEWS · GRP · MMED · HOST · COMT · ANON
13 domains
112 evidence items
AS137735 (CCBNET)
AS137,735
85100.0%tcp-reset · http-blockpage
NEWS · GRP · ANON · COMT · MMED
15 domains
15 evidence items
AS198734
AS198,734
84100.0%tcp-reset
MMED · NEWS · ANON · GRP · COMT
13 domains
22 evidence items
AS140726 (UNICOM-HEFEI-MAN)
AS140,726
81.5100.0%tcp-reset
ANON · AIML · GRP · NEWS · MMED
8 domains
56 evidence items
AS138950 (CHINATELECOM-Jiangsu-Wuxi-International-IDC)
AS138,950
81100.0%tcp-reset
ANON · AIML · GRP · NEWS · MMED
7 domains
49 evidence items
AS55990 (HWCSNET)
AS55,990
77.599.9%ip-blocked
NEWS · GRP · SRCH · MMED · HOST · PORN · COMT · ANON · AIML
28 domains
1,313 evidence items
AS9808 (CHINAMOBILE-CN)
AS9,808
49.598.8%http-redirect
0 domains
81 evidence items
AS24400 (CMNET-V4shanghai-AS-AP)
AS24,400
48.495.9%http-redirect
0 domains
98 evidence items
AS24355
AS24,355
40100.0%Methods unavailable
0 domains
11 evidence items
AS4134 (CHINANET-BACKBONE)
AS4,134
38.495.9%Methods unavailable
0 domains
98 evidence items
AS4538 (ERX-CERNET-BKB)
AS4,538
38.496.0%Methods unavailable
0 domains
74 evidence items
AS56040 (CMNET-GuangDong-AP)
AS56,040
37.393.3%Methods unavailable
0 domains
15 evidence items
AS56041 (CMNET-Zhejiang-AP)
AS56,041
33.884.6%Methods unavailable
0 domains
13 evidence items
AS56044 (CMNET-AS-Liaoning)
AS56,044
29.573.7%Methods unavailable
0 domains
76 evidence items
AS4837 (CHINA169-Backbone)
AS4,837
27.267.9%Methods unavailable
0 domains
81 evidence items
AS56046 (CMNET-Jiangsu-AP)
AS56,046
21.553.8%Methods unavailable
0 domains
26 evidence items
AS4847 (CNIX-AP)
AS4,847
2050.0%Methods unavailable
0 domains
4 evidence items
AS4808 (CHINA169-BJ)
AS4,808
1025.0%Methods unavailable
0 domains
4 evidence items
AS4812 (CHINANET-SH-AP)
AS4,812
5.413.6%Methods unavailable
0 domains
59 evidence items
AS154177
AS154,177
0.82.0%Methods unavailable
0 domains
50 evidence items

Returned rows: 24; source ISP count: 24. Counts and percentages apply to the returned measurement sample.

ISP source, dates and complete evidence fields

Source generated: . This is a source timestamp, not proof that every underlying observation is current.

Open the source response

Complete returned record
{
  "country": "CN",
  "countryName": "China",
  "generated_at": "2026-09-11T04:03:34.172049Z",
  "ispCount": 24,
  "isps": [
    {
      "asn": 58866,
      "blockRate": 1,
      "blockedCategories": [
        "NEWS",
        "GRP",
        "MMED",
        "HOST",
        "COMT",
        "AIML",
        "ANON",
        "SRCH"
      ],
      "blockedCount": 41,
      "categoryBreadth": 0.8,
      "compositeScore": 93.5,
      "country": "CN",
      "countryName": "China",
      "evidenceCount": 41,
      "methodAggressiveness": 1,
      "methods": [
        "tcp-reset"
      ],
      "name": "AS58866",
      "uniqueDomains": 17
    },
    {
      "asn": 137702,
      "blockRate": 1,
      "blockedCategories": [
        "NEWS",
        "GRP",
        "ANON",
        "SRCH",
        "COMT",
        "MMED",
        "AIML"
      ],
      "blockedCount": 315,
      "categoryBreadth": 0.7,
      "compositeScore": 92.5,
      "country": "CN",
      "countryName": "China",
      "evidenceCount": 315,
      "methodAggressiveness": 1,
      "methods": [
        "tcp-reset"
      ],
      "name": "AS137702 (CHINATELECOM-JIANGSU-NANJING-IDC)",
      "uniqueDomains": 22
    },
    {
      "asn": 146812,
      "blockRate": 1,
      "blockedCategories": [
        "NEWS",
        "GRP",
        "ANON",
        "COMT",
        "MMED",
        "SRCH",
        "AIML"
      ],
      "blockedCount": 1124,
      "categoryBreadth": 0.7,
      "compositeScore": 92.5,
      "country": "CN",
      "countryName": "China",
      "evidenceCount": 1124,
      "methodAggressiveness": 1,
      "methods": [
        "tcp-reset"
      ],
      "name": "AS146812",
      "uniqueDomains": 23
    },
    {
      "asn": 62468,
      "blockRate": 1,
      "blockedCategories": [
        "NEWS",
        "GRP",
        "MMED",
        "HOST",
        "COMT",
        "ANON",
        "SRCH"
      ],
      "blockedCount": 121,
      "categoryBreadth": 0.7,
      "compositeScore": 89.5,
      "country": "CN",
      "countryName": "China",
      "evidenceCount": 121,
      "methodAggressiveness": 1,
      "methods": [
        "tcp-reset"
      ],
      "name": "AS62468 (HKCLOUDX)",
      "uniqueDomains": 14
    },
    {
      "asn": 136190,
      "blockRate": 1,
      "blockedCategories": [
        "NEWS",
        "GRP",
        "MMED",
        "HOST",
        "COMT",
        "ANON"
      ],
      "blockedCount": 112,
      "categoryBreadth": 0.6,
      "compositeScore": 86.5,
      "country": "CN",
      "countryName": "China",
      "evidenceCount": 112,
      "methodAggressiveness": 1,
      "methods": [
        "tcp-reset"
      ],
      "name": "AS136190 (CHINATELECOM-ZHEJIANG-JINHUA-IDC)",
      "uniqueDomains": 13
    },
    {
      "asn": 137735,
      "blockRate": 1,
      "blockedCategories": [
        "NEWS",
        "GRP",
        "ANON",
        "COMT",
        "MMED"
      ],
      "blockedCount": 15,
      "categoryBreadth": 0.5,
      "compositeScore": 85,
      "country": "CN",
      "countryName": "China",
      "evidenceCount": 15,
      "methodAggressiveness": 1,
      "methods": [
        "tcp-reset",
        "http-blockpage"
      ],
      "name": "AS137735 (CCBNET)",
      "uniqueDomains": 15
    },
    {
      "asn": 198734,
      "blockRate": 1,
      "blockedCategories": [
        "MMED",
        "NEWS",
        "ANON",
        "GRP",
        "COMT"
      ],
      "blockedCount": 22,
      "categoryBreadth": 0.5,
      "compositeScore": 84,
      "country": "CN",
      "countryName": "China",
      "evidenceCount": 22,
      "methodAggressiveness": 1,
      "methods": [
        "tcp-reset"
      ],
      "name": "AS198734",
      "uniqueDomains": 13
    },
    {
      "asn": 140726,
      "blockRate": 1,
      "blockedCategories": [
        "ANON",
        "AIML",
        "GRP",
        "NEWS",
        "MMED"
      ],
      "blockedCount": 56,
      "categoryBreadth": 0.5,
      "compositeScore": 81.5,
      "country": "CN",
      "countryName": "China",
      "evidenceCount": 56,
      "methodAggressiveness": 1,
      "methods": [
        "tcp-reset"
      ],
      "name": "AS140726 (UNICOM-HEFEI-MAN)",
      "uniqueDomains": 8
    },
    {
      "asn": 138950,
      "blockRate": 1,
      "blockedCategories": [
        "ANON",
        "AIML",
        "GRP",
        "NEWS",
        "MMED"
      ],
      "blockedCount": 49,
      "categoryBreadth": 0.5,
      "compositeScore": 81,
      "country": "CN",
      "countryName": "China",
      "evidenceCount": 49,
      "methodAggressiveness": 1,
      "methods": [
        "tcp-reset"
      ],
      "name": "AS138950 (CHINATELECOM-Jiangsu-Wuxi-International-IDC)",
      "uniqueDomains": 7
    },
    {
      "asn": 55990,
      "blockRate": 0.9992,
      "blockedCategories": [
        "NEWS",
        "GRP",
        "SRCH",
        "MMED",
        "HOST",
        "PORN",
        "COMT",
        "ANON",
        "AIML"
      ],
      "blockedCount": 1312,
      "categoryBreadth": 0.9,
      "compositeScore": 77.5,
      "country": "CN",
      "countryName": "China",
      "evidenceCount": 1313,
      "methodAggressiveness": 0.2,
      "methods": [
        "ip-blocked"
      ],
      "name": "AS55990 (HWCSNET)",
      "uniqueDomains": 28
    },
    {
      "asn": 9808,
      "blockRate": 0.9877,
      "blockedCategories": [],
      "blockedCount": 80,
      "categoryBreadth": 0,
      "compositeScore": 49.5,
      "country": "CN",
      "countryName": "China",
      "evidenceCount": 81,
      "methodAggressiveness": 0.4,
      "methods": [
        "http-redirect"
      ],
      "name": "AS9808 (CHINAMOBILE-CN)",
      "uniqueDomains": 0
    },
    {
      "asn": 24400,
      "blockRate": 0.9592,
      "blockedCategories": [],
      "blockedCount": 94,
      "categoryBreadth": 0,
      "compositeScore": 48.4,
      "country": "CN",
      "countryName": "China",
      "evidenceCount": 98,
      "methodAggressiveness": 0.4,
      "methods": [
        "http-redirect"
      ],
      "name": "AS24400 (CMNET-V4shanghai-AS-AP)",
      "uniqueDomains": 0
    },
    {
      "asn": 24355,
      "blockRate": 1,
      "blockedCategories": [],
      "blockedCount": 11,
      "categoryBreadth": 0,
      "compositeScore": 40,
      "country": "CN",
      "countryName": "China",
      "evidenceCount": 11,
      "methodAggressiveness": 0,
      "methods": [],
      "name": "AS24355",
      "uniqueDomains": 0
    },
    {
      "asn": 4134,
      "blockRate": 0.9592,
      "blockedCategories": [],
      "blockedCount": 94,
      "categoryBreadth": 0,
      "compositeScore": 38.4,
      "country": "CN",
      "countryName": "China",
      "evidenceCount": 98,
      "methodAggressiveness": 0,
      "methods": [],
      "name": "AS4134 (CHINANET-BACKBONE)",
      "uniqueDomains": 0
    },
    {
      "asn": 4538,
      "blockRate": 0.9595,
      "blockedCategories": [],
      "blockedCount": 71,
      "categoryBreadth": 0,
      "compositeScore": 38.4,
      "country": "CN",
      "countryName": "China",
      "evidenceCount": 74,
      "methodAggressiveness": 0,
      "methods": [],
      "name": "AS4538 (ERX-CERNET-BKB)",
      "uniqueDomains": 0
    },
    {
      "asn": 56040,
      "blockRate": 0.9333,
      "blockedCategories": [],
      "blockedCount": 14,
      "categoryBreadth": 0,
      "compositeScore": 37.3,
      "country": "CN",
      "countryName": "China",
      "evidenceCount": 15,
      "methodAggressiveness": 0,
      "methods": [],
      "name": "AS56040 (CMNET-GuangDong-AP)",
      "uniqueDomains": 0
    },
    {
      "asn": 56041,
      "blockRate": 0.8462,
      "blockedCategories": [],
      "blockedCount": 11,
      "categoryBreadth": 0,
      "compositeScore": 33.8,
      "country": "CN",
      "countryName": "China",
      "evidenceCount": 13,
      "methodAggressiveness": 0,
      "methods": [],
      "name": "AS56041 (CMNET-Zhejiang-AP)",
      "uniqueDomains": 0
    },
    {
      "asn": 56044,
      "blockRate": 0.7368,
      "blockedCategories": [],
      "blockedCount": 56,
      "categoryBreadth": 0,
      "compositeScore": 29.5,
      "country": "CN",
      "countryName": "China",
      "evidenceCount": 76,
      "methodAggressiveness": 0,
      "methods": [],
      "name": "AS56044 (CMNET-AS-Liaoning)",
      "uniqueDomains": 0
    },
    {
      "asn": 4837,
      "blockRate": 0.679,
      "blockedCategories": [],
      "blockedCount": 55,
      "categoryBreadth": 0,
      "compositeScore": 27.2,
      "country": "CN",
      "countryName": "China",
      "evidenceCount": 81,
      "methodAggressiveness": 0,
      "methods": [],
      "name": "AS4837 (CHINA169-Backbone)",
      "uniqueDomains": 0
    },
    {
      "asn": 56046,
      "blockRate": 0.5385,
      "blockedCategories": [],
      "blockedCount": 14,
      "categoryBreadth": 0,
      "compositeScore": 21.5,
      "country": "CN",
      "countryName": "China",
      "evidenceCount": 26,
      "methodAggressiveness": 0,
      "methods": [],
      "name": "AS56046 (CMNET-Jiangsu-AP)",
      "uniqueDomains": 0
    },
    {
      "asn": 4847,
      "blockRate": 0.5,
      "blockedCategories": [],
      "blockedCount": 2,
      "categoryBreadth": 0,
      "compositeScore": 20,
      "country": "CN",
      "countryName": "China",
      "evidenceCount": 4,
      "methodAggressiveness": 0,
      "methods": [],
      "name": "AS4847 (CNIX-AP)",
      "uniqueDomains": 0
    },
    {
      "asn": 4808,
      "blockRate": 0.25,
      "blockedCategories": [],
      "blockedCount": 1,
      "categoryBreadth": 0,
      "compositeScore": 10,
      "country": "CN",
      "countryName": "China",
      "evidenceCount": 4,
      "methodAggressiveness": 0,
      "methods": [],
      "name": "AS4808 (CHINA169-BJ)",
      "uniqueDomains": 0
    },
    {
      "asn": 4812,
      "blockRate": 0.1356,
      "blockedCategories": [],
      "blockedCount": 8,
      "categoryBreadth": 0,
      "compositeScore": 5.4,
      "country": "CN",
      "countryName": "China",
      "evidenceCount": 59,
      "methodAggressiveness": 0,
      "methods": [],
      "name": "AS4812 (CHINANET-SH-AP)",
      "uniqueDomains": 0
    },
    {
      "asn": 154177,
      "blockRate": 0.02,
      "blockedCategories": [],
      "blockedCount": 1,
      "categoryBreadth": 0,
      "compositeScore": 0.8,
      "country": "CN",
      "countryName": "China",
      "evidenceCount": 50,
      "methodAggressiveness": 0,
      "methods": [],
      "name": "AS154177",
      "uniqueDomains": 0
    }
  ],
  "methodology": "compositeScore (0-100) ranks ISPs by blockRate + category breadth + method aggressiveness - a RELATIVE ranking signal, NOT an absolute percent-blocked. blockRate is the share of an ISP MEASURED evidence that are blocking signals (OONI/CensoredPlanet probe censoring networks heavily, so ~1.0 is common for targeted ISPs), NOT the share of the internet the ISP blocks."
}

Editorial service list

Know the named targets.

Undated editorial context. Check current evidence before treating a service as blocked.

GoogleYouTubeFacebookTwitterWhatsAppWikipediaInstagramTelegram
Check a specific domain

Country guidance

Keep alternatives ready.

The original country recommendations are preserved below. They are undated guidance, not a guarantee of access or safety.

  • Voidly VPN is WireGuard over UDP; alternate transports are in development and are not offered yet.
  • WireGuard UDP is detected and blocked at times in China, so keep a second circumvention tool.
  • Avoid peak hours for better speeds.

Questions, answered

China, in context.

Is the internet censored in China?

The dated 30-day index score is 17/100. That describes the source sample, not every person, network or domain in China.

China operates the Great Firewall, one of the most sophisticated internet censorship systems globally. Deep packet inspection, DNS poisoning, and IP blocking are used extensively.

Use the recent records and their original sources to investigate a particular restriction. Disruption alone does not establish intentional censorship.

Which websites and services are affected in China?

The editorial list names: Google, YouTube, Facebook, Twitter, WhatsApp, Wikipedia, Instagram, Telegram. It is undated context, not a current availability check.

Results can differ between networks, measurement times and targets. Country incident records and the country API preserve source details.

How does China compare with other countries?

Original snapshot rank: #4. Editorial risk tier: Severe. Editorial trend: stable. The tier and trend are curated context; they are not a measured change between recent dates.

The index includes a dated score window and a separate all-time measurement corpus. Compare like-for-like windows and inspect sample coverage before drawing a national comparison. Compare the index.

Which blocking methods appear in China?

The pipeline can record DNS interference, TCP resets, HTTP block pages, TLS/SNI failures and network-level outages. This list describes possible mechanisms; it does not claim every mechanism was observed in China.

Each incident and ISP record below retains its reported mechanism and evidence. Inspect the country evidence query before attributing a failure to deliberate blocking.

How recent is the data?

The index score snapshot was fetched . Its source serve-time can advance without changes in the underlying scores. The accumulating historical OONI file has no dated observation window.

Current country data, incidents, network state and models have independent source dates. The page requested those sources . It does not continuously refresh. Missing, stale and uncovered responses remain labeled.

Subscribe to source feeds
How can I check a specific domain in China?

Open the accessibility checker. For a source query, use the country code with the domain you are investigating:

GET https://api.voidly.ai/v1/accessibility/check?domain=twitter.com&country=CN

MCP server: npx @voidly/mcp-server
Tool: check_domain_blocked
Arguments: domain="twitter.com", country="CN"

CLI: npx @voidly/cli check twitter.com CN

Inspect the returned timestamp, measurement coverage and method. A sampled result is not a guarantee for every user. API documentation · MCP tools.

Can a VPN help with restrictions in China?

Results depend on local networks and the transport used. The source’s complete country guidance is preserved in the recommendations section. Voidly’s current product details belong on the VPN page; a measured probe result is not a safety or success guarantee.

How do I cite this China profile?

Use the canonical country URL, https://voidly.ai/cn, with your access date and the date of any source snapshot you quote. The citation below supports plain text and BibTeX copy/download. A model generation or page access date is not a publication date.

Voidly-original analysis is CC BY 4.0. Upstream records keep their own attribution and licenses.

Open evidence

Keep the citation attached.

Country JSON
Download .txt
Voidly Research. (n.d.). China Internet Censorship Profile. https://voidly.ai/cn (accessed 2026-09-11).

Citations use the public /cn URL. Access date is not publication date. Cite the individual source, observation time and model version when using a number.

Voidly-original analysis and annotations are CC BY 4.0. Upstream OONI, IODA and Censored Planet records retain their own licenses. Read and attribute the underlying evidence.