Internet outage in Tanzania

Voidly Research

Active Incident

Internet outage in Tanzania

Tanzania · March 16, 2026 · 5 hours

IODA detected significant connectivity drop in Tanzania. 2 critical alerts recorded. CenAlert confirms censorship activity.

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Evidence

2%

Anomaly Rate

2

Measurements

67%

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 Score67% certainty of censorship

Detection TimeMarch 16, 2026

Full methodology →

Corroborating Evidence (4)

Evidence collected from multiple independent sources. Upstream claims shown in quotes are not Voidly assertions.

IODAInternet Outage Detection & Analysis2 records

outage

"IODA detected critical level outage for Pwani"— IODA report

Signal value: 0.02

Mar 16, 2026

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outage

"IODA detected critical level outage for Pwani"— IODA report

Signal value: 0.02

Mar 16, 2026

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Censored PlanetUniversity of Michigan research2 records

http-blocking-timeout

"HTTP blocking (timeout): 3/6 probes blocked (50.0%) for protonvpn.com"— Censored Planet report

Signal value: 0.50

Mar 16, 2026

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http-blocking-timeout

"HTTP blocking (timeout): 3/6 probes blocked (50.0%) for telegram.org"— Censored Planet report

Signal value: 0.50

Mar 16, 2026

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Affected Services (3)

Proton VPNProtonVPNTelegram

Blocked Domains (2)

protonvpn.com telegram.org

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 Tanzania [TZ-2026-0024]. Voidly Global Censorship Index. https://voidly.ai/incident/TZ-2026-0024

↓ BibTeX ↓ RIS ↓ Markdown ↓ JSON Full citation page →·CC BY 4.0·TZ-2026-0024

Internet outage in Tanzania

Evidence

What This Means

How We Detected This

Corroborating Evidence (4)

Affected Services (3)

Blocked Domains (2)

What we cannot say

Cite This Incident

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