Confirmed: historical blocking: CN 2022-10-22

Voidly Research

Active Incident

Confirmed: historical blocking: CN 2022-10-22

China · October 22, 2022 · 1 day

Backfilled from OONI historical archive. 1 anomalous day(s), 2 measurements, 100% anomaly rate. Signal types: block, interference. Signal levels: critical.

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Evidence

100%

Anomaly Rate

2

Measurements

98%

Confidence

What This Means

100% of 2 network tests from China failed to reach these services. Global baseline failure rate is typically 1-3%. This 97+ percentage point difference strongly indicates intentional blocking.

How We Detected This

Data Sourceooni-historical-backfill

ML ModelGradientBoosting v3.3 (LOCO median F1 0.87, honest across 127 countries)

Confidence Score98% certainty of censorship

Detection TimeOctober 22, 2022

Full methodology →

What we cannot say

Who caused it — measurement data alone does not attribute this to any government, ISP, or other actor.
Intent — anomalous or unreachable measurements indicate interference, not a stated motive or a deliberate-vs-incidental determination.
Which networks — no specific ASN/ISP is identified for this incident.
The mechanism — we cannot state whether this was DNS tampering, TLS/SNI reset, an HTTP blockpage, throttling, or an infrastructure outage.
Sub-national scope — measurement is aggregated at the country level; we cannot localize to a province, city, or network segment.
Independent corroboration — this rests on a single source; treat it as a single-source signal, not a multi-source confirmation.

Cite This Incident

Voidly Research. (2022). Confirmed: historical blocking: CN 2022-10-22 [CN-2022-0346]. Voidly Global Censorship Index. https://voidly.ai/incident/CN-2022-0346

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Confirmed: historical blocking: CN 2022-10-22

Evidence

What This Means

How We Detected This

What we cannot say

Cite This Incident

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