Active Incident
Confirmed: network disruption in Vietnam
Vietnam · January 17, 2026 · 42 days
IODA detected significant connectivity drop. 13 critical alerts recorded. CenAlert confirms censorship activity.
Evidence
86%
Anomaly Rate
123
Measurements
75%
Confidence
What This Means
86% of 123 network tests from Vietnam failed to reach these services. Global baseline failure rate is typically 1-3%. This 83+ percentage point difference strongly indicates intentional blocking.
How We Detected This
Data Sourceioda + censoredplanet
ML ModelGradientBoosting v3.3 (LOCO median F1 0.87, honest across 127 countries)
Confidence Score75% certainty of censorship
Detection TimeJanuary 17, 2026
Corroborating Evidence (220)
Evidence collected from multiple independent sources. Upstream claims shown in quotes are not Voidly assertions.
IODAInternet Outage Detection & Analysis154 records
outage
"IODA detected critical level outage for Hồ Chí Minh city"— IODA report
Signal value: 0.86
Feb 28, 2026
View source →outage
"IODA detected critical level outage for Hải Dương"— IODA report
Signal value: 0.22
Feb 26, 2026
View source →outage
"IODA detected critical level outage for Yên Bái"— IODA report
Signal value: 0.24
Feb 26, 2026
View source →outage
"IODA detected critical level outage for Thái Bình"— IODA report
Signal value: 0.21
Feb 26, 2026
View source →outage
"IODA detected critical level outage for Vĩnh Phúc"— IODA report
Signal value: 0.21
Feb 26, 2026
View source →+ 149 more IODA records
Censored PlanetUniversity of Michigan research66 records
dns-blocking
"DNS blocking detected: 3/3 probes anomalous (100.0%) for bbc.com"— Censored Planet report
Signal value: 1.00
Feb 25, 2026
View source →dns-blocking
"DNS blocking detected: 4/4 probes anomalous (100.0%) for binance.com"— Censored Planet report
Signal value: 1.00
Feb 25, 2026
View source →dns-blocking
"DNS blocking detected: 3/3 probes anomalous (100.0%) for facebook.com"— Censored Planet report
Signal value: 1.00
Feb 25, 2026
View source →dns-blocking
"DNS blocking detected: 3/3 probes anomalous (100.0%) for getlantern.org"— Censored Planet report
Signal value: 1.00
Feb 25, 2026
View source →dns-blocking
"DNS blocking detected: 3/3 probes anomalous (100.0%) for google.com"— Censored Planet report
Signal value: 1.00
Feb 25, 2026
View source →+ 61 more Censored Planet records
Affected Services (17)
BBCFacebookInstagramLanternMediumNew York TimesProton VPNProtonVPNPsiphonSignalTelegramThe GuardianTikTokTwitter/XWhatsAppXYouTube
Blocked Domains (22)
bbc.combinance.comfacebook.comgetlantern.orggoogle.cominstagram.commedium.comnytimes.compornhub.comprotonvpn.compsiphon.careddit.comsignal.orgsubstack.comtelegram.orgtheguardian.comtiktok.comtumblr.comtwitter.comwhatsapp.comand 2 more
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). Confirmed: network disruption in Vietnam [VN-2026-0003]. Voidly Global Censorship Index. https://voidly.ai/incident/VN-2026-0003