--- title: From Stealth Blackout to Whitelisting: Inside the... description: Iran is experiencing one of history's most severe internet shutdowns, affecting 90 million people for nearly two weeks. The shutdown evolved from withdrawing... canonical: https://daily.dev/posts/from-stealth-blackout-to-whitelisting-inside-the-iranian-shutdown-isvnehnzt twitter:card: summary_large_image twitter:site: @dailydotdev og:type: website og:site_name: daily.dev og:title: From Stealth Blackout to Whitelisting: Inside the Iranian Shutdown | daily.dev og:description: Iran is experiencing one of history's most severe internet shutdowns, affecting 90 million people for nearly two weeks. The shutdown evolved from withdrawing... og:url: https://daily.dev/posts/from-stealth-blackout-to-whitelisting-inside-the-iranian-shutdown-isvnehnzt og:image: https://api.daily.dev/og/posts/IsVNEHNZt.png og:image:alt: From Stealth Blackout to Whitelisting: Inside the Iranian Shutdown og:image:width: 1200 og:image:height: 630 og:locale: en --- > ## Documentation Index > Fetch the complete documentation index at: https://daily.dev/llms.txt > Use this file to discover all available pages before exploring further. # From Stealth Blackout to Whitelisting: Inside the Iranian Shutdown **[Hacker News](https://daily.dev/sources/hn)** · 10 min read · 0 upvotes · 0 comments ## Summary Iran is experiencing one of history's most severe internet shutdowns, affecting 90 million people for nearly two weeks. The shutdown evolved from withdrawing IPv6 BGP routes to blocking traffic while maintaining IPv4 routing visibility, enabling selective whitelisting of approved users. Analysis using NetFlow data reveals sophisticated filtering techniques including the National Information Network and traffic blocking without BGP manipulation. The government's approach reduces shutdown costs while maintaining control, with Starlink providing limited circumvention despite jamming efforts. This represents an evolution in authoritarian internet control tactics that other governments may replicate. ## Full article daily.dev links to this article rather than hosting it. Read it at the original source: ## Similar posts on daily.dev - [Iran Internet Shutdown Report](https://daily.dev/posts/iran-internet-shutdown-report-u33pzdz14) · Hacker News · 0 upvotes · 0 comments - [Schneier on Security](https://daily.dev/posts/schneier-on-security-rlw9tkfcg) · Schneier on Security · 0 upvotes · 0 comments - [Smuggling Starlink tech into Iran to beat the internet blackout](https://daily.dev/posts/smuggling-starlink-tech-into-iran-to-beat-the-internet-blackout-plhyjdydz) · Hacker News · 2 upvotes · 0 comments - [Iran's Internet is partially restored, Cloudflare Radar data shows](https://daily.dev/posts/iran-s-internet-is-partially-restored-cloudflare-radar-data-shows-eogkd7ldf) · Cloudflare · 0 upvotes · 0 comments --- Tags: [#bgp](https://daily.dev/tags/bgp), [#cyber](https://daily.dev/tags/cyber), [#networking](https://daily.dev/tags/networking) [View this post on daily.dev](https://daily.dev/posts/from-stealth-blackout-to-whitelisting-inside-the-iranian-shutdown-isvnehnzt) ```json {"@context":"https://schema.org","@graph":[{"@type":"Organization","@id":"https://daily.dev/#organization","name":"daily.dev","url":"https://daily.dev","logo":{"@type":"ImageObject","url":"https://daily.dev/apple-touch-icon.png","width":180,"height":180},"sameAs":["https://twitter.com/dailydotdev","https://github.com/dailydotdev","https://www.linkedin.com/company/daily-dev-ltd"]},{"@type":"WebSite","@id":"https://daily.dev/#website","url":"https://daily.dev","name":"daily.dev","publisher":{"@id":"https://daily.dev/#organization"},"potentialAction":{"@type":"SearchAction","target":{"@type":"EntryPoint","urlTemplate":"https://daily.dev/search?q={search_term_string}"},"query-input":"required name=search_term_string"}}]} {"@context":"https://schema.org","@type":"TechArticle","headline":"From Stealth Blackout to Whitelisting: Inside the Iranian Shutdown","url":"https://daily.dev/posts/from-stealth-blackout-to-whitelisting-inside-the-iranian-shutdown-isvnehnzt","mainEntityOfPage":{"@type":"WebPage","@id":"https://daily.dev/posts/from-stealth-blackout-to-whitelisting-inside-the-iranian-shutdown-isvnehnzt"},"datePublished":"2026-01-22T08:14:01.865Z","dateModified":"2026-03-15T03:32:43.515Z","description":"Iran is experiencing one of history's most severe internet shutdowns, affecting 90 million people for nearly two weeks. The shutdown evolved from withdrawing...","image":"https://media.daily.dev/image/upload/f_auto,q_auto/v1/posts/8427c8ff75db780328b2a0c47df41667?_a=AQAEulh","thumbnailUrl":"https://media.daily.dev/image/upload/f_auto,q_auto/v1/posts/8427c8ff75db780328b2a0c47df41667?_a=AQAEulh","isAccessibleForFree":true,"articleSection":"Hacker News","inLanguage":"en","publisher":{"@type":"Organization","name":"daily.dev","url":"https://daily.dev","logo":{"@type":"ImageObject","url":"https://daily.dev/apple-touch-icon.png","width":180,"height":180}},"author":{"@type":"Organization","name":"Hacker News","logo":"https://media.daily.dev/image/upload/t_logo,f_auto/v1/logos/hn","url":"https://daily.dev/sources/hn"},"commentCount":0,"discussionUrl":"https://daily.dev/posts/from-stealth-blackout-to-whitelisting-inside-the-iranian-shutdown-isvnehnzt","interactionStatistic":[{"@type":"InteractionCounter","interactionType":{"@type":"LikeAction"},"userInteractionCount":0},{"@type":"InteractionCounter","interactionType":{"@type":"CommentAction"},"userInteractionCount":0}],"keywords":"bgp,cyber,networking","timeRequired":"PT10M"} {"@context":"https://schema.org","@type":"BreadcrumbList","itemListElement":[{"@type":"ListItem","position":1,"name":"Home","item":"https://daily.dev"},{"@type":"ListItem","position":2,"name":"Hacker News","item":"https://daily.dev/sources/hn"},{"@type":"ListItem","position":3,"name":"From Stealth Blackout to Whitelisting: Inside the Iranian Shutdown"}]} ```