Censorship detected in Iran

Voidly Research

Incident record · Iran

Internet censorship detected in Iran

Type: censorship
Status: suspected
Severity: warning

Source summary

CenAlert detected interference. Impact: 0.5. Reported by: HTTP blocking (timeout): 3/6 probes blocked (50.0%) for psiphon.ca.

Open incident JSON

Reported anomaly rate: 0.5%
Source measurement count: 1
Incident confidence: 65%

Linked evidence has its own count and confidence fields. These quantities are not interchangeable.

Follow the evidence

1 linked records.

Inspect the observation, the upstream claim and why it was linked.

Linked observation dates

1 dated · 0 without a verified timezone

Censored Planet1 linked record

Jun 8, 2026 · 00:00 UTCSingle observed timestamp

Each point is a linked record. Horizontal position shows observation time; stacking separates nearby points. The full records below provide the values. This is not a measured outage-duration chart.

Upstream claims are attributed to their source. Multiple records or source names do not by themselves establish independent corroboration.

Censored Planet1 record · open evidence

http-blocking-timeout · elevated

censoredplanet:hyperquack:HTTP:IR:psiphon.ca:2026-06-08

Jun 8, 2026 · 00:00 UTC

HTTP blocking (timeout): 3/6 probes blocked (50.0%) for psiphon.ca
Upstream claim · Censored Planet

Signal value: 0.5
Signal baseline: Unavailable
Evidence confidence: 80%
Link confidence: 80%

Why it is linked: CenAlert event for same country and date range

Domain: psiphon.ca
Blocking method: ip-blocked
Retrieved: Jun 9, 2026 · 16:26 UTC

Open upstream source

Complete evidence record

{
  "asn": 205717,
  "blockingMethod": "ip-blocked",
  "confidence": 0.8,
  "continent": "Asia",
  "countryCode": "IR",
  "domain": "psiphon.ca",
  "domainCategory": "ANON",
  "id": 137750230,
  "kind": "http-probe",
  "linkConfidence": 0.8,
  "linkReason": "CenAlert event for same country and date range",
  "observedAt": "2026-06-08T00:00:00Z",
  "probeNodeId": null,
  "regionCode": null,
  "retrievedAt": "2026-06-09T16:26:29.102239Z",
  "riskTier": 1,
  "signalBaseline": null,
  "signalLevel": "elevated",
  "signalType": "http-blocking-timeout",
  "signalValue": 0.5,
  "source": "censoredplanet",
  "sourceRef": "censoredplanet:hyperquack:HTTP:IR:psiphon.ca:2026-06-08",
  "sourceUrl": "https://data.censoredplanet.org",
  "unSubregion": "Southern Asia",
  "upstreamCause": null,
  "upstreamClaim": "HTTP blocking (timeout): 3/6 probes blocked (50.0%) for psiphon.ca",
  "upstreamSeverity": null
}

Source-reported corroboration

The source’s corroboration assessment is separate from incident confidence and evidence-link confidence. Inspect its source list, count and description.

{
  "description": "Single source: censoredplanet",
  "evidenceCount": 1,
  "level": "low",
  "score": 0.6,
  "sourceCount": 1,
  "sources": [
    "censoredplanet"
  ]
}

Declared incident sources: Censored Planet.

This record does not list two distinct sources. Treat it as a single-source or uncorroborated record.

Scope and attribution

What the record names.

Methodology

Affected services

Psiphon

Incident mechanism

Connection timeout / throttling

Individual evidence may carry more specific methods. Those do not automatically describe the entire incident.

Affected domains · 1

Domains named by the source record. Each link opens country-specific OONI measurements; a named domain is not a blanket national-block verdict.

psiphon.ca

Networks and evidence attribution

ASNs named by this source record: AS205717.

This aggregate describes fields literally present in linked evidence. It does not identify who caused an event or prove intent.

{
  "asns_attributed": 1,
  "domains_attributed": 1,
  "methods": [
    {
      "evidence_count": 1,
      "method": "ip-blocked"
    }
  ],
  "note": "Aggregated from this incident's linked evidence rows — only domains, ASNs, and blocking methods the evidence literally records are shown, with the per-item evidence count.",
  "sources": [
    "censoredplanet"
  ],
  "top_asns": [
    {
      "asn": "AS205717",
      "evidence_count": 1
    }
  ],
  "top_domains": [
    {
      "domain": "psiphon.ca",
      "evidence_count": 1
    }
  ]
}

What this record cannot establish

Measurements alone do not attribute an event to a government, ISP or another actor, and do not establish intent. An outage or anomalous result can have several explanations.

The country label is an aggregation scope. It is not a census of every network, city or service. Regional or ASN fields belong to their individual source evidence and should not be expanded into a national claim.

A confirmed duration is not supplied. The source observation window and evidence timestamps do not prove an exact start and stop of blocking.

Signal definitions, baseline rates and model versions depend on the source. This record does not establish a common baseline or calibrated certainty. Use the source’s specific signal definition and evaluation before interpreting a score.

Inspect measurement coverage

Cite this incident

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Use the permanent published URL.
The original source title is preserved.

BibTeX ↓RIS ↓Markdown ↓JSON ↓Full citation page →

APA citation

Voidly Research. (2026). Internet censorship detected in Iran [IR-2026-0261]. Voidly Global Censorship Index. https://voidly.ai/incident/IR-2026-0261

The record over time.

Created: 2026-06-09 18:00:04.596901 · timezone unspecified
Last updated: Jun 9, 2026 · 21:43 UTC
Revision: 2

Revision history and original fields

Revision-history array unavailable.

Canonical ID: IR-2026-0261. Source ID: IR-2026-0261. Hash ID: 3cca8ab9bbc4.

Additional source duration field: 0 hours. It is retained separately from the minutes field and does not establish a verified event duration.

Complete source JSON

{
  "affectedAsns": [
    "AS205717"
  ],
  "affectedDomains": [
    "psiphon.ca"
  ],
  "affectedServices": [
    "Psiphon"
  ],
  "anomalyRate": 0.005,
  "attribution": {
    "asns_attributed": 1,
    "domains_attributed": 1,
    "methods": [
      {
        "evidence_count": 1,
        "method": "ip-blocked"
      }
    ],
    "note": "Aggregated from this incident's linked evidence rows — only domains, ASNs, and blocking methods the evidence literally records are shown, with the per-item evidence count.",
    "sources": [
      "censoredplanet"
    ],
    "top_asns": [
      {
        "asn": "AS205717",
        "evidence_count": 1
      }
    ],
    "top_domains": [
      {
        "domain": "psiphon.ca",
        "evidence_count": 1
      }
    ]
  },
  "confidence": 0.65,
  "corroboration": {
    "description": "Single source: censoredplanet",
    "evidenceCount": 1,
    "level": "low",
    "score": 0.6,
    "sourceCount": 1,
    "sources": [
      "censoredplanet"
    ]
  },
  "country": "IR",
  "countryName": "Iran",
  "createdAt": "2026-06-09T18:00:04.596901",
  "description": "CenAlert detected interference. Impact: 0.5. Reported by: HTTP blocking (timeout): 3/6 probes blocked (50.0%) for psiphon.ca.",
  "duration": null,
  "durationHours": 0,
  "endTime": null,
  "evidence": [
    {
      "asn": 205717,
      "blockingMethod": "ip-blocked",
      "confidence": 0.8,
      "continent": "Asia",
      "countryCode": "IR",
      "domain": "psiphon.ca",
      "domainCategory": "ANON",
      "id": 137750230,
      "kind": "http-probe",
      "linkConfidence": 0.8,
      "linkReason": "CenAlert event for same country and date range",
      "observedAt": "2026-06-08T00:00:00Z",
      "probeNodeId": null,
      "regionCode": null,
      "retrievedAt": "2026-06-09T16:26:29.102239Z",
      "riskTier": 1,
      "signalBaseline": null,
      "signalLevel": "elevated",
      "signalType": "http-blocking-timeout",
      "signalValue": 0.5,
      "source": "censoredplanet",
      "sourceRef": "censoredplanet:hyperquack:HTTP:IR:psiphon.ca:2026-06-08",
      "sourceUrl": "https://data.censoredplanet.org",
      "unSubregion": "Southern Asia",
      "upstreamCause": null,
      "upstreamClaim": "HTTP blocking (timeout): 3/6 probes blocked (50.0%) for psiphon.ca",
      "upstreamSeverity": null
    }
  ],
  "evidenceCount": 1,
  "evidenceSourceBreakdown": {
    "censoredplanet": 1
  },
  "evidenceSpan": {
    "earliest": "2026-06-08T00:00:00Z",
    "latest": "2026-06-08T00:00:00Z"
  },
  "flag": "🇮🇷",
  "generated_at_utc": "2026-10-03T23:43:11.758368Z",
  "hashId": "3cca8ab9bbc4",
  "id": "IR-2026-0261",
  "incidentType": "censorship",
  "measurementCount": 1,
  "mechanism": "Connection timeout / throttling",
  "readableId": "IR-2026-0261",
  "reportUrl": "https://api.voidly.ai/data/incidents/3cca8ab9bbc4/report?format=markdown",
  "revision": 2,
  "severity": "warning",
  "severityGrade": "B",
  "sources": [
    "censoredplanet"
  ],
  "startTime": "2026-06-08T00:00:00Z",
  "status": "suspected",
  "title": "Internet censorship detected in Iran",
  "updatedAt": "2026-06-09T21:43:06Z"
}

All Iran incidents

Oct 2, 2026 · disruptionInternet connectivity disruption in Iran Oct 2, 2026 · censorshipCensorship detected in IR Oct 1, 2026 · disruptionInternet connectivity disruption in Iran Oct 1, 2026 · censorshipCensorship detected in IR Sep 30, 2026 · disruptionInternet connectivity disruption in Iran Sep 30, 2026 · censorshipCensorship detected in IR

Related records come from up to 100 recent records in the same country. They do not establish a causal connection.

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