Active Incident
Internet outage in Russia
Russia · April 21, 2026 · 10 hours
IODA detected significant connectivity drop in Russia. 1 critical alerts recorded. CenAlert confirms censorship activity.
Evidence
2%
Anomaly Rate
1
Measurements
65%
Confidence
What This Means
2% of tests showed anomalies, above the typical 1-3% baseline. This suggests potential network interference.
How We Detected This
Data Sourceioda + censoredplanet
ML ModelGradientBoosting v3.3 (LOCO median F1 0.87, honest across 127 countries)
Confidence Score65% certainty of censorship
Detection TimeApril 21, 2026
Corroborating Evidence (8)
Evidence collected from multiple independent sources. Upstream claims shown in quotes are not Voidly assertions.
IODAInternet Outage Detection & Analysis3 records
outage
"IODA detected critical level outage for Voronezh"— IODA report
Signal value: 0.01
Apr 21, 2026
View source →outage
"IODA detected critical level outage for Voronezh"— IODA report
Signal value: 0.01
Apr 21, 2026
View source →outage
"IODA detected critical level outage for Unknown Region in Russian Federation"— IODA report
Signal value: 0.02
Apr 21, 2026
View source →Censored PlanetUniversity of Michigan research5 records
http-blocking-tcp-reset
"HTTPS blocking (tcp-reset): 125/170 probes blocked (73.5%) for bbc.com"— Censored Planet report
Signal value: 0.74
Apr 21, 2026
View source →http-blocking-tcp-reset
"HTTPS blocking (tcp-reset): 111/166 probes blocked (66.9%) for facebook.com"— Censored Planet report
Signal value: 0.67
Apr 21, 2026
View source →http-blocking-tcp-reset
"HTTPS blocking (tcp-reset): 108/166 probes blocked (65.1%) for instagram.com"— Censored Planet report
Signal value: 0.65
Apr 21, 2026
View source →http-blocking-tcp-reset
"HTTPS blocking (tcp-reset): 113/166 probes blocked (68.1%) for medium.com"— Censored Planet report
Signal value: 0.68
Apr 21, 2026
View source →http-blocking-timeout
"HTTPS blocking (timeout): 118/164 probes blocked (72.0%) for whatsapp.com"— Censored Planet report
Signal value: 0.72
Apr 21, 2026
View source →Affected Services (5)
BBCFacebookInstagramMediumWhatsApp
Blocked Domains (5)
Click any domain to view raw OONI measurements
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.
Cite This Incident
Voidly Research. (2026). Internet outage in Russia [RU-2026-0184]. Voidly Global Censorship Index. https://voidly.ai/incident/RU-2026-0184