Active Incident
Internet outage in Iran
Iran · July 19, 2026 · Ongoing
IODA detected significant connectivity drop in Iran. 1 critical alerts recorded. CenAlert confirms censorship activity.
Evidence
21%
Anomaly Rate
1
Measurements
65%
Confidence
What This Means
21% 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 TimeJuly 19, 2026
Corroborating Evidence (43)
Evidence collected from multiple independent sources. Upstream claims shown in quotes are not Voidly assertions.
IODAInternet Outage Detection & Analysis7 records
outage
"IODA detected critical level outage for Golestan"— IODA report
Signal value: 0.01
Jul 19, 2026
View source →outage
"IODA detected critical level outage for North Khorasan"— IODA report
Signal value: 0.05
Jul 19, 2026
View source →outage
"IODA detected critical level outage for South Khorasan"— IODA report
Signal value: 0.02
Jul 19, 2026
View source →outage
"IODA detected critical level outage for Sistan and Baluchestan"— IODA report
Signal value: 0.01
Jul 19, 2026
View source →outage
"IODA detected critical level outage for Tehran"— IODA report
Signal value: 0.01
Jul 19, 2026
View source →+ 2 more IODA records
Censored PlanetUniversity of Michigan research36 records
dns-blocking
"DNS blocking detected: 13/13 probes anomalous (100.0%) for bbc.com"— Censored Planet report
Signal value: 1.00
Jul 19, 2026
View source →dns-blocking
"DNS blocking detected: 28/28 probes anomalous (100.0%) for chat.openai.com"— Censored Planet report
Signal value: 1.00
Jul 19, 2026
View source →dns-blocking
"DNS blocking detected: 31/31 probes anomalous (100.0%) for chatgpt.com"— Censored Planet report
Signal value: 1.00
Jul 19, 2026
View source →dns-blocking
"DNS blocking detected: 27/27 probes anomalous (100.0%) for claude.ai"— Censored Planet report
Signal value: 1.00
Jul 19, 2026
View source →dns-blocking
"DNS blocking detected: 15/15 probes anomalous (100.0%) for facebook.com"— Censored Planet report
Signal value: 1.00
Jul 19, 2026
View source →+ 31 more Censored Planet records
Affected Services (10)
ChatGPTClaudeFacebookGeminiProtonVPNSignalTelegramWhatsAppXYouTube
Blocked Domains (23)
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.
- A confirmed duration — we report the observation window, not a verified start/stop of any block.
- 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 Iran [IR-2026-1578]. Voidly Global Censorship Index. https://voidly.ai/incident/IR-2026-1578
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