# Censorship detected in IR

**Country:** 🇮🇷 Iran (IR)
**Date:** 2026-05-31
**Type:** Censorship
**Severity:** CRITICAL
**Status:** suspected

## Summary

None

## Metrics

- Confidence: 90%
- Measurements: 16
- Anomaly Rate: 100.0%

## Evidence

- **OONI** (measurement): OONI signal: 56/56 measurements anomalous (100.0%)
  - Observed: 2026-05-31
  - Confidence: 90%
  - [OONI Explorer (independently verifiable)](https://explorer.ooni.org/search?probe_cc=IR&test_name=signal&since=2026-05-31&until=2026-06-01&only=anomalies)
- **OONI** (measurement): OONI whatsapp: 42/45 measurements anomalous (93.3%)
  - Observed: 2026-05-31
  - Confidence: 87%
  - [OONI Explorer (independently verifiable)](https://explorer.ooni.org/search?probe_cc=IR&test_name=whatsapp&since=2026-05-31&until=2026-06-01&only=anomalies)
- **OONI** (measurement): OONI telegram: 54/56 measurements anomalous (96.4%)
  - Observed: 2026-05-31
  - Confidence: 89%
  - [OONI Explorer (independently verifiable)](https://explorer.ooni.org/search?probe_cc=IR&test_name=telegram&since=2026-05-31&until=2026-06-01&only=anomalies)
- **OONI** (measurement): OONI facebook_messenger: 32/57 measurements anomalous (56.1%)
  - Observed: 2026-05-31
  - Confidence: 72%
  - [OONI Explorer (independently verifiable)](https://explorer.ooni.org/search?probe_cc=IR&test_name=facebook_messenger&since=2026-05-31&until=2026-06-01&only=anomalies)
- **OONI** (measurement): OONI signal: 70/70 measurements anomalous (100.0%)
  - Observed: 2026-05-31
  - Confidence: 90%
  - [OONI Explorer (independently verifiable)](https://explorer.ooni.org/search?probe_cc=IR&test_name=signal&since=2026-05-31&until=2026-06-01&only=anomalies)
- **OONI** (measurement): OONI whatsapp: 71/74 measurements anomalous (95.9%)
  - Observed: 2026-05-31
  - Confidence: 88%
  - [OONI Explorer (independently verifiable)](https://explorer.ooni.org/search?probe_cc=IR&test_name=whatsapp&since=2026-05-31&until=2026-06-01&only=anomalies)
- **OONI** (measurement): OONI telegram: 78/80 measurements anomalous (97.5%)
  - Observed: 2026-05-31
  - Confidence: 89%
  - [OONI Explorer (independently verifiable)](https://explorer.ooni.org/search?probe_cc=IR&test_name=telegram&since=2026-05-31&until=2026-06-01&only=anomalies)
- **OONI** (measurement): OONI facebook_messenger: 45/76 measurements anomalous (59.2%)
  - Observed: 2026-05-31
  - Confidence: 74%
  - [OONI Explorer (independently verifiable)](https://explorer.ooni.org/search?probe_cc=IR&test_name=facebook_messenger&since=2026-05-31&until=2026-06-01&only=anomalies)
- **OONI** (measurement): OONI signal: 73/74 measurements anomalous (98.6%)
  - Observed: 2026-05-31
  - Confidence: 89%
  - [OONI Explorer (independently verifiable)](https://explorer.ooni.org/search?probe_cc=IR&test_name=signal&since=2026-05-31&until=2026-06-01&only=anomalies)
- **OONI** (measurement): OONI whatsapp: 57/59 measurements anomalous (96.6%)
  - Observed: 2026-05-31
  - Confidence: 89%
  - [OONI Explorer (independently verifiable)](https://explorer.ooni.org/search?probe_cc=IR&test_name=whatsapp&since=2026-05-31&until=2026-06-01&only=anomalies)
- **OONI** (measurement): OONI telegram: 67/69 measurements anomalous (97.1%)
  - Observed: 2026-05-31
  - Confidence: 89%
  - [OONI Explorer (independently verifiable)](https://explorer.ooni.org/search?probe_cc=IR&test_name=telegram&since=2026-05-31&until=2026-06-01&only=anomalies)
- **OONI** (measurement): OONI facebook_messenger: 37/72 measurements anomalous (51.4%)
  - Observed: 2026-05-31
  - Confidence: 71%
  - [OONI Explorer (independently verifiable)](https://explorer.ooni.org/search?probe_cc=IR&test_name=facebook_messenger&since=2026-05-31&until=2026-06-01&only=anomalies)
- **OONI** (measurement): OONI signal: 47/47 measurements anomalous (100.0%)
  - Observed: 2026-05-31
  - Confidence: 90%
  - [OONI Explorer (independently verifiable)](https://explorer.ooni.org/search?probe_cc=IR&test_name=signal&since=2026-05-31&until=2026-06-01&only=anomalies)
- **OONI** (measurement): OONI whatsapp: 33/33 measurements anomalous (100.0%)
  - Observed: 2026-05-31
  - Confidence: 90%
  - [OONI Explorer (independently verifiable)](https://explorer.ooni.org/search?probe_cc=IR&test_name=whatsapp&since=2026-05-31&until=2026-06-01&only=anomalies)
- **OONI** (measurement): OONI telegram: 48/48 measurements anomalous (100.0%)
  - Observed: 2026-05-31
  - Confidence: 90%
  - [OONI Explorer (independently verifiable)](https://explorer.ooni.org/search?probe_cc=IR&test_name=telegram&since=2026-05-31&until=2026-06-01&only=anomalies)
- **OONI** (measurement): OONI facebook_messenger: 26/48 measurements anomalous (54.2%)
  - Observed: 2026-05-31
  - Confidence: 72%
  - [OONI Explorer (independently verifiable)](https://explorer.ooni.org/search?probe_cc=IR&test_name=facebook_messenger&since=2026-05-31&until=2026-06-01&only=anomalies)

## What we cannot say

- **Who caused it** — measurement data alone does not attribute the interference 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, 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.
- **Independent corroboration** — this rests on a single source; treat it as a single-source signal, not a multi-source confirmation.

## Data Sources

ooni

## Citation

Voidly Research. (2026). Censorship detected in IR [IR-2026-2271]. Retrieved from https://voidly.ai/incident/IR-2026-2271

---
*Report generated by Voidly Research on 2026-08-05*
*Data licensed under CC BY 4.0*
*Incident ID: IR-2026-2271*
*Permalink: https://voidly.ai/incident/IR-2026-2271*