AMA: I'm Doug Madory, Internet Data Analyst. Ask me anything about the recent Red Sea cable cuts or other subsea cable incidents in recent years.

Hey r/networking!

I'm Doug Madory, Director of Internet Analysis at Kentik, and I thought I would try an AMA to discuss the recent submarine cable cuts in the Red Sea and see if there are any questions I can answer.

PROOF: https://imgur.com/gallery/red-sea-cable-cuts-ama-on-reddit-cu7S4uq

This past weekend saw yet another round of critical cable disruptions impacting internet traffic between Europe and Asia. I’ve been deep-diving into the data, using NetFlow, BGP, and latency measurements to analyze the real-world impact.

I recently wrote a blog post and about how these cuts impacted major cloud providers, transit networks in multiple countries, and the overall resilience of the global internet.

Here are a few of the media interviews about the event:

• https://apnews.com/article/red-sea-undersea-cables-cut-internet-disruption-0b08fc5f02daf72710e0010c11ea21ae 
• https://www.thenationalnews.com/podcasts/business-extra/2025/09/10/what-to-know-about-internet-cables-in-the-red-sea/ 
• https://www.fastcompany.com/91401266/red-sea-cable-cuts-starlink-satellite 

I'd be more than happy to field questions about:

• This incident:
  • Observed impacts on cloud regions (like AWS, GCP, and Azure).
  • How different countries and ASNs were affected.
  • Why the Red Sea is such a hot spot for cable cuts.
• Other major submarine cable incidents in recent years.
• Internet routing, global connectivity, or my other reporting.

I'll be here answering your questions for as long as you’d like.

https://x.com/DougMadory

https://bsky.app/profile/eldomador.bsky.social 

https://infosec.exchange/@dougmadory