{"affectedAsns":[],"affectedDomains":[],"affectedServices":[],"anomalyRate":0.8928571428571429,"attribution":{"asns_attributed":0,"domains_attributed":0,"methods":[],"note":"Aggregated from this incident's qualifying linked evidence rows — only domains, ASNs, and blocking methods the evidence literally records are shown, with the per-item evidence count. No per-domain/per-ASN attribution is present in the qualifying linked evidence for this incident (e.g. country/ASN-level outage signals).","sources":[],"top_asns":[],"top_domains":[]},"confidence":0.9401428571428573,"corroboration":{"description":"No evidence available","level":"none","score":0,"sourceCount":0,"sources":[]},"country":"CN","countryName":"China","createdAt":"2026-05-21T20:02:28.106934+00:00","description":"Backfilled from OONI historical archive. 1 anomalous day(s), 3 measurements, 89% anomaly rate. Signal types: block, interference. Signal levels: critical.","duration":1440,"durationHours":24,"endTime":"2021-12-16T23:59:59Z","evidence":[],"evidenceCount":0,"evidenceSourceBreakdown":{},"evidenceSpan":null,"flag":"🇨🇳","generated_at_utc":"2026-11-05T06:08:00.986548Z","hashId":"4656bc4431ae","id":"CN-2021-0006","incidentType":"censorship","measurementCount":3,"mechanism":"dns-blocking","normalOoniObservationCount":0,"normalOoniObservationNote":"These linked OONI rows carry the historical signal_level='normal' stored label and are quarantined from qualifying evidence pending regrade. The label is not proof that every row was accessible or anomaly-free: low-anomaly rows and rows with an omitted confirmed result may be present.","normalOoniObservations":[],"readableId":"CN-2021-0006","reportUrl":"https://api.voidly.ai/data/incidents/4656bc4431ae/report?format=markdown","revision":1,"severity":"critical","severityGrade":"B","sources":["ooni-historical-backfill"],"startTime":"2021-12-16T00:00:00Z","status":"confirmed","title":"Historical blocking: CN 2021-12-16","updatedAt":"2026-05-21T20:02:28.106934+00:00"}