Timeline
The record since 2009, from published reporting, with this deployment's own corroborated events laid over the months it has measured.
February–May 2026: renewed blackout after military strikes
After military strikes on 28 February, connectivity fell to about 4 % of ordinary levels. By 21 April it was the longest nationwide internet disruption recorded in any country. The president ordered it ended on 25 May; service was partially restored on 26 May, slow and still restricted.
Sources: Wikipedia: 2026 Internet blackout in Iran, Iran International: internet restored after 88-day blackout
January 2026 protests: nationwide internet blackout
On 8 January, during the twelfth day of protests, the authorities cut internet and phone service across the country. On 28 January the blackout was eased, but most users could reach only pre-approved sites under a whitelist.
Sources: Wikipedia: 2026 Internet blackout in Iran, Iran International: NetBlocks on the blackout
June 2025 war: near-total international shutdown
During the Israel–Iran war, international connectivity was first restricted and then almost entirely cut for over a week, with only domestic services reachable; restoration began around 25 June.
Sources: NetBlocks reports, Wikipedia: Internet censorship in Iran
Mahsa Amini protests: WhatsApp and Instagram blocked, mobile curfews
From 21 September 2022, WhatsApp and Instagram were blocked nationwide and mobile internet was cut nightly in many provinces for months. WhatsApp and Instagram remain blocked.
Sources: Wikipedia: Mahsa Amini protests — Internet shutdowns, NetBlocks reports
Khuzestan water protests: mobile internet disrupted
Mobile internet was disrupted across Khuzestan during protests over water shortages.
Sources: NetBlocks reports
Sistan and Baluchestan: regional shutdown
Internet access was cut in parts of Sistan and Baluchestan province after killings at the border and the protests that followed.
Sources: NetBlocks reports
November 2019: near-total national shutdown
During protests over fuel prices, international connectivity was cut for roughly a week; NetBlocks measured national connectivity falling to about 5 % of normal. The most complete shutdown of a country its size at the time.
Sources: Wikipedia: 2019 Internet blackout in Iran, NetBlocks reports
Telegram blocked by court order
A judicial order blocked Telegram nationwide. The block has held since; Telegram remains one of the most-used services in Iran through circumvention tools.
December–January protests: Telegram and Instagram cut
Telegram and Instagram were blocked for about two weeks during nationwide protests; Telegram was then the country’s dominant messaging platform.
Encrypted traffic cut ahead of the anniversary of the revolution
HTTPS/SSL connections to services such as Gmail were blocked nationwide for around a week, one of the first country-wide interferences with encrypted traffic.
Post-election protests: social media and mobile disruptions
After the disputed presidential election, Facebook, Twitter and YouTube were blocked and mobile/SMS service was disrupted around protests. Twitter and Facebook have remained blocked since.
The curated entries are maintained by hand from the sources linked on each and are stated to the day only where those sources are. IranBlock's own measurement begins in March 2026; earlier entries are reporting, not measurement.