Active Incident
Confirmed: internet outage in Iran
Iran · August 17, 2026 · Ongoing
IODA detected significant connectivity drop in Iran. 9 critical alerts recorded. CenAlert confirms censorship activity.
Evidence
15%
Anomaly Rate
9
Measurements
70%
Confidence
What This Means
15% 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 Score70% certainty of censorship
Detection TimeAugust 17, 2026
Corroborating Evidence (14)
Evidence collected from multiple independent sources. Upstream claims shown in quotes are not Voidly assertions.
IODAInternet Outage Detection & Analysis11 records
outage
"IODA detected critical level outage for Sistan and Baluchestan"— IODA report
Signal value: 0.18
Aug 17, 2026
View source →outage
"IODA detected critical level outage for North Khorasan"— IODA report
Signal value: 0.23
Aug 17, 2026
View source →outage
"IODA detected critical level outage for East Azarbaijan"— IODA report
Signal value: 0.02
Aug 17, 2026
View source →outage
"IODA detected critical level outage for North Khorasan"— IODA report
Signal value: 0.34
Aug 17, 2026
View source →outage
"IODA detected critical level outage for Tehran"— IODA report
Signal value: 0.02
Aug 17, 2026
View source →+ 6 more IODA records
Censored PlanetUniversity of Michigan research3 records
http-blocking-timeout
"HTTP blocking (timeout): 4/7 probes blocked (57.1%) for bbc.com"— Censored Planet report
Signal value: 0.57
Aug 17, 2026
View source →http-blocking-timeout
"HTTP blocking (timeout): 4/7 probes blocked (57.1%) for facebook.com"— Censored Planet report
Signal value: 0.57
Aug 17, 2026
View source →http-blocking-tcp-reset
"HTTP blocking (tcp-reset): 4/7 probes blocked (57.1%) for signal.org"— Censored Planet report
Signal value: 0.57
Aug 17, 2026
View source →Affected Services (2)
FacebookSignal
Blocked Domains (3)
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.
- 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). Confirmed: internet outage in Iran [IR-2026-2371]. Voidly Global Censorship Index. https://voidly.ai/incident/IR-2026-2371
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