Director of Internet Analysis at @Kentikinc. Alum of @dynresearch @renesys @uva @dartmouth @usairforce

New Hampshire
Joined August 2013
Nearly all North Korean websites have been inaccessible for the past day as the country experiences severe Internet disruptions. 175.45.176.0/24 contains the name servers for .kp and has been down repeatedly in the past 24hrs. @nknewsorg nknews.org/pro/nearly-all-no…
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Looks like the North Koreans changed how 175.45.176.0/24 was transited in the past few hours going via Cenbong (AS134544) to Transtelecom (AS20485) in Russia.
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Doug Madory (also on Bluesky) retweeted
Here's our view of traffic to Star JV (AS131279) by routed prefix based on @kentikinc aggregate NetFlow. 175.45.176.0/24 follows the pulsing of the BGP routes before largely stopping. 175.45.179.0/24 is normally the top destination but now is carrying very little traffic.
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Here's our view of traffic to Star JV (AS131279) by routed prefix based on @kentikinc aggregate NetFlow. 175.45.176.0/24 follows the pulsing of the BGP routes before largely stopping. 175.45.179.0/24 is normally the top destination but now is carrying very little traffic.
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Doug Madory (also on Bluesky) retweeted
Internet infrastructure keeps getting targeted on both sides of this war. Overnight, a strike hit a data center in Russian-occupied Donetsk. Traffic via AS41039 collapsed at 22:00 UTC and stayed down for more than six hours before service returned. kyivindependent.com/data-cen…
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Internet infrastructure keeps getting targeted on both sides of this war. Overnight, a strike hit a data center in Russian-occupied Donetsk. Traffic via AS41039 collapsed at 22:00 UTC and stayed down for more than six hours before service returned. kyivindependent.com/data-cen…
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Doug Madory (also on Bluesky) retweeted
Congrats to @DeutscheWelle for launching the Internet Censorship Monitor! 👏 We're happy that OONI data helps support this effort. 🙏🐙♥️ This builds on our collaboration with @DeutscheWelle on the News Media Scan app: play.google.com/store/apps/d… apps.apple.com/us/app/news-m… xitter.cf/DeutscheWelle/status/2…
How accessible is dw.com across DW's target regions? 🌐 The Internet Censorship Monitor shows country by country where dw.com is freely available and where access is blocked. Explore the interactive map: p.dw.com/p/5OIWV
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Does Europe have a Starlink/Starshield alternative? My answer to CNN's @jimsciutto today was: "No. Not today and not tomorrow."
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Doug Madory (also on Bluesky) retweeted
Ars technical ( arstechnica.com/security/202… ) also came in to cover the ccTLD hijack of .gh, .sl, and .as I had posted about yesterday. The most important part of the article, including Chrome’s recommendation for continuous CT monitoring. Crosslayer Labs has an industry-leading solution for providing this type of monitoring. We also correlate CT alerts with other key infrastructure events like the root-cause DNS changes associated with this attack. Everybody needs to be doing this monitoring now to protect themselves from infrastructure attacks that exist outside their network perimeter. Also, as a treat, because it really does matter, I wanted to share the actual list of affected domains (not just vague references to big brands), courtesy of Wayne Thayer's (Fastly) moz-dev-security-policy post: amazon[.]com[.]gh coca-cola[.]com[.]gh destco[.]com[.]gh ghana[.]gov[.]gh google[.]com[.]gh huawei[.]com[.]gh mtn[.]com[.]gh nike[.]com[.]gh oracle[.]com[.]gh rent[.]com[.]gh shell[.]com[.]gh unisec[.]com[.]gh whatsapp[.]com[.]gh youtube[.]com[.]gh airbnb[.]sl allianz[.]sl amazon[.]sl apple[.]sl bmw[.]com[.]sl canva[.]com[.]sl canva[.]sl cisco[.]sl coca-cola[.]sl cocacola[.]sl cybersecurity[.]gov[.]sl ebay[.]com[.]sl ebay[.]sl fanta[.]com[.]sl fanta[.]sl gemini[.]com[.]sl google[.]com[.]sl google[.]sl gucci[.]sl honda[.]com[.]sl honda[.]sl instagram[.]sl interpol[.]sl logitech[.]sl mercedes-benz[.]sl microsoft[.]sl netflix[.]com[.]sl netflix[.]sl nike[.]com[.]sl panasonic[.]com[.]sl panasonic[.]sl paypal[.]sl reddit[.]sl rolex[.]com[.]sl sierraloaded[.]sl starlink[.]com[.]sl starlink[.]sl tiktok[.]sl unesco[.]sl unhcr[.]sl xvideos[.]sl yahoo[.]sl youtube[.]com[.]sl youtube[.]sl
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Doug Madory (also on Bluesky) retweeted
Iran summoned Norway's ambassador to protest Oslo's failure to block unauthorized Starlink operations within Iranian territory. Tehran argued that Norway, as the network's ITU registry state, must halt transmissions it claims are exploited by the US and Israel for intervention, reports Iranian state media IRIB
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Doug Madory (also on Bluesky) retweeted
Beginning at 06:20 UTC on Oct-2, the Philippines-Singapore segment of the C2C submarine cable system went down impacting internet service in the Philippines. Service was restored at 05:20 UTC the following day. astig.ph/undersea-cable-outa… @InfiniVAN (AS135607) was one of the most impacted networks. ioda.inetintel.cc.gatech.edu…
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Doug Madory (also on Bluesky) retweeted
داگ مادوری تحلیلگر شرکت پایش اینترنت کنتیک می‌گوید به نظر می‌رسد افت ترافیک اینترنت ( در ایران) فقط مربوط به کلادفلر باشد؛ سرویسی که داده‌های «کلادفلر رادار» بر پایهٔ آن است. پیش‌تر هم چنین اتفاقی برای ایران رخ داده بود. در داده‌های ما -شرکت کنتیک - نیز همین افت در ترافیک ایران از شبکهٔ کلادفلر با شناسهٔ AS13335 دیده می‌شود، اما این کاهش تأثیر چندانی بر حجم کلی ترافیک اینترنت ایران نداشته است
Replying to @filterbaan
This traffic drop appears to be specific to @Cloudflare which is what @CloudflareRadar is based on. This has happened before for Iran this year. We can see the same drop in Iranian traffic from AS13335, but it didn't make much of a difference in the overall traffic level.
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Beginning at 06:20 UTC on Oct-2, the Philippines-Singapore segment of the C2C submarine cable system went down impacting internet service in the Philippines. Service was restored at 05:20 UTC the following day. astig.ph/undersea-cable-outa… @InfiniVAN (AS135607) was one of the most impacted networks. ioda.inetintel.cc.gatech.edu…
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Impacts were visible in BGP data as well.
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Doug Madory (also on Bluesky) retweeted
Replying to @filterbaan
This traffic drop appears to be specific to @Cloudflare which is what @CloudflareRadar is based on. This has happened before for Iran this year. We can see the same drop in Iranian traffic from AS13335, but it didn't make much of a difference in the overall traffic level.
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Doug Madory (also on Bluesky) retweeted
Huge thanks to @cipesaug for hosting the Forum on Internet Freedom in Africa (FIFAfrica 2026) and bringing the African digital rights community together! Warm thanks for the opportunity to share OONI tools and learn from participants 🙏❤️ #FIFAfrica26 #InternetFreedomAfrica
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Doug Madory (also on Bluesky) retweeted
How has the #Internet evolved over the past 15 years? What are the realities behind AI-driven traffic growth? And why does #trust and #security remain central to the Internet ecosystem? TCP #65: @MFridstrom @DougMadory @Infoblox arelion.com/resources/the-co…
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Multiple waves of internet outages in #Ukraine yesterday captured by @IODA_live. Wave 1 (02:12 UTC on Sep-27): Affected networks: AS51622, AS20934, AS21312, AS50581, AS208139, AS35562, AS25082, AS42824, AS43497, and several more. ioda.inetintel.cc.gatech.edu…
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Wave 2 (03:52 UTC on Sep-27): Affected networks: AS​​199995, AS43668, AS48648, AS28858, AS43743, AS51124, AS35689, AS41645, AS44820 and several more. ioda.inetintel.cc.gatech.edu…
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Wave 3 (21:13 UTC on Sep 27): Affected networks: AS42352, AS35144, AS41062, AS57697, AS30735, and AS209593. ioda.inetintel.cc.gatech.edu…
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