Lai Yi Ohlsen

Internet measurement, history and archival. Head of @CloudflareRadar. Lecturer at @ParsonsDesign. Formerly @measurementlab.

[Lai Yi Ohlsen @laiyiohlsen]

Btw

[Cloudflare @Cloudflare]

When strikes hit Yandex data centers, many assumed Russian bot operations went dark. Cloudflare data reveals that while search crawling stopped, malicious bots simply migrated to other networks. https://t.co/TiuaOjqlDf

[Lai Yi Ohlsen @laiyiohlsen]

@next_hopself @heymingwei need a BGP attribute stats page 😅

[Lai Yi Ohlsen @laiyiohlsen]

:')

[Cloudflare Radar @CloudflareRadar]

📡Cloudflare Radar’s redesign is live! ✨ We've completely updated the landing page to make global Internet data easier to explore for broader audiences.

This includes:
- New interactive map for traffic and outages.
- Tabbed navigation for clearer, guided data exploration.
- Updated UI using Kumo components

🔎 Explore the new look: https://t.co/MfGFQZIcWA
👀 Read the blog post: https://t.co/EPsV6bt9Rn

[Lai Yi Ohlsen @laiyiohlsen]

What does it mean for the Internet to be whole?

Thoughts on reflections on the above + more on Substack. Adapted from my 2025 keynote at SplinterCon Paris.

https://t.co/HlQFUI8HIi

[Lai Yi Ohlsen @laiyiohlsen]

What is the Splinternet? And more specifically, what does it mean for the Internet to fracture or fragment?

The term “Splinternet” suggests that there was a “whole” Internet to begin with - a singular entity capable of being fractured. *An* Internet to splinter.

[Lai Yi Ohlsen @laiyiohlsen]

If we assume this to be true, that there is a state that does or has or could exist where the Internet is a single, unified entity, the next question becomes what was or is this unbroken version of the Internet? When did it exist or has it ever existed?

[Benton Institute for Broadband & Society @Benton_Inst]

From examining how longstanding communications principles translate to today’s internet infrastructure to outlining the forces reshaping the broadband marketplace, we've covered a lot of ground at this morning's convening. 📡

Join our afternoon sessions: https://t.co/2go9AYLb6B

[Cloudflare Radar @CloudflareRadar]

🚨 Evidence of disruptions in Russia’s Far East, including Chukotka, Magadan Oblast, Kamchatka, and Sakhalin Oblast, following nationwide elections held this past weekend and reports of a cable cut.

👀 Follow along on Radar:
https://t.co/ess6uBrnQi
https://t.co/l8DWsqcpyv
https://t.co/ODkIyrGWTr
https://t.co/AqdZIR8wxT

[Cloudflare Radar @CloudflareRadar]

🚨 Significant traffic volume drop in #Cuba amidst reports of a nationwide energy outage. ETECSA (AS27725) in particular showing clear signs of impact.

📉 Following along on Radar: https://t.co/2V1U5CzB7d

[Lai Yi Ohlsen @laiyiohlsen]

(I workshopped this joke with several people before posting, I hope you like it)

[Lai Yi Ohlsen @laiyiohlsen]

Had a great time running the Bronx 10m on Saturday - really optimized for last mile latency! 😂

[michelle @michellechen]

here u go https://t.co/8gtW6BIYNi

[Cloudflare @Cloudflare]

We're excited to announce that today Python Workers are generally available (GA).
It means Python is now a first-class, fully supported language on the Cloudflare Developer Platform. Read everything about it: https://t.co/ZwQe6IPd93

[OONI @OpenObservatory]

Heading to @ACM_IMC_2026? 😃

Join us for the IMC Hackathon and use Internet measurement data to solve real-world challenges! 🙌

📅 October 12, 2026
📌 Karlsruhe, Germany
🗒️ Register: https://t.co/NGqTHMBl4X ✨

#IMC2026 #hackathon

[Lai Yi Ohlsen @laiyiohlsen]

@next_hopself @DougMadory @IamRedListed @ayubio @vhsliberal @pedrocmanha @heymingwei @DougMadory what would you like to see instead?

[OONI @OpenObservatory]

Wow! 😲

Yesterday, after years of blocking, #Venezuela started *unblocking* several news media websites...! 🥳

Follow our friends @vesinfiltro for the latest updates! They're posting detailed updates here: https://t.co/1grwzedNSs ✊

If you're in #Venezuela, help measure the (un)blocking of websites with OONI Probe: https://t.co/F8w613buVz 🐙

#internetVE

[Lai Yi Ohlsen @laiyiohlsen]

@next_hopself @DougMadory @IamRedListed @ayubio @vhsliberal @pedrocmanha @heymingwei Wow my first feature request via tweet 🐣

[Lai Yi Ohlsen @laiyiohlsen]

Dreamy time performing at Lincoln Center this summer

[Lincoln Center @LincolnCenter]

Last month choreographer Benjamin Akio Kimitch brought "Tiger Hands" to Hearst Plaza, restaged for an unforgettable outdoor experience as part of our #SummerForTheCity Dance Encounters series. 💫

Part of the Pasculano Collaborative for Contemporary Dance.

[Lai Yi Ohlsen @laiyiohlsen]

Excited for this! Register before spots run out!

[Measurement Lab @MeasurementLab]

Join us for the IMC 2026 Hackathon October 12, 2026 in Karlsruhe, Germany! Hosted by a consortium (groups in comment) this is a great opportunity to learn about various data sets and network (pun intended) with other like-minded researchers! Register: https://t.co/ZeRZTwBG6P

[Lai Yi Ohlsen @laiyiohlsen]

Looking forward to this discussion in DC next week. Thirty years after the Telecom Act of 1996 - what needs to change about the core principles of communications policy?

[Benton Institute for Broadband & Society @Benton_Inst]

Written in the era of dial-up modems and must-see cable TV, the Telecom Act of 1996 set core principles for communications policy.

Thirty years later, which still hold, which need rethinking, and what comes next? 🤔

Join us on September 24: https://t.co/JXJ5ZaOBiu