Understanding the November 18 Cloudflare Outage

The Internet Report

Tune in for a deep dive into the November 18 Cloudflare outage that impacted multiple services including X, OpenAI, and Anthropic—and explore key takeaways for ITOps teams.

For insights on the other recent outage that Cloudflare experienced on December 5, see this blog post: https://www.thousandeyes.com/blog/cloudflare-outage-analysis-december-5-2025

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CHAPTERS

00:00 Intro

00:55 The Nov. 18 Cloudflare Outage

02:34 Configuration Changes & Outages

03:45 Diagnosing the Fault Domain

05:47 Why Outage Recovery Can Take Time

10:43 Are Cloud Outages Increasing?

12:09 ITOps Best Practices

14:01 Outage Trends: By the Numbers

15:35 Get in Touch

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Explore the Cloudflare outage further in the ThousandEyes platform (no login required): https://ahhplivtvmhdmbduwcuonefullpkkohp.share.thousandeyes.com/

For additional insights, check out The Internet Outage Survival Kit: https://www.thousandeyes.com/resources/the-internet-outage-survival-kit?utm_source=wistia&utm_medium=referral&utm_campaign=fy26q2_internetreport_q2fy26ep4_podcast

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Want to get in touch?

If you have questions, feedback, or guests you would like to see featured on the show, send us a note at [email protected]. Or follow us on LinkedIn or X: @thousandeyes

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ABOUT THE INTERNET REPORT

This is The Internet Report, a podcast uncovering what’s working and what’s breaking on the Internet—and why.

Tune in to hear ThousandEyes’ Internet experts dig into some of the most interesting outage events from the past couple weeks, discussing what went awry—was it the Internet, or an application issue?

Plus, learn about the latest trends in ISP outages, cloud network outages, collaboration network outages, and more.

Catch all the episodes on YouTube or your favorite podcast platform:

- Apple Podcasts: https://podcasts.apple.com/us/podcast/the-internet-report/id1506984526

- Spotify: https://open.spotify.com/show/5ADFvqAtgsbYwk4JiZFqHQ?si=00e9c4b53aff4d08&nd=1&dlsi=eab65c9ea39d4773

- SoundCloud: https://soundcloud.com/ciscopodcastnetwork/sets/the-internet-report