Episode Details

Your Netflix stream hops between six different networks before reaching Berlin, but where does that handoff actually happen? Internet Exchange Points (IXPs) are the invisible trading floors where tens of thousands of independent networks swap traffic—moving 200+ terabits per second—yet almost nobody knows they exist. We explore the infrastructure that runs the internet, the researchers who finally mapped it, and the concentration problem that makes the whole system fragile. 00:00 - Intro: The submarine cable recap 02:15 - The multi-network routing mystery 04:30 - What are Internet Exchange Points (IXPs) 07:00 - The 2012 research paper that revealed IXPs' true complexity 09:45 - Why internet maps couldn't see IXPs 12:00 - Geographic and institutional concentration risks 14:30 - The geopolitical implications of hidden infrastructure 16:15 - Outro & what's next --- Sources & further reading: • Ager, Chatzis, Feldmann, Sarrar, Uhlig, Willinger — "Anatomy of a Large European IXP" (SIGCOMM 2012): https://dl.acm.org/doi/abs/10.1145/2342356.2342393 • William B. Norton — The Internet Peering Playbook and DrPeering research: https://drpeering.net/ • Internet Society — IXP resources, Africa IXP reports, MANRS initiative: https://www.internetsociety.org/issues/ixps/ • Böttger et al. — "Shaping the Internet: 10 Years of IXP Growth" (2018): https://arxiv.org/pdf/1810.10963 • ScienceDirect — "Dissecting the cost of peering: Global evidence from IXPs" (2025): https://www.sciencedirect.com/science/article/pii/S0308596126001035 • TeleGeography — IP Transit Pricing Q2 2025: https://resources.telegeography.com/ip-transit-price-erosion-significant-regional-differences-remain • Packet Clearing House — IXP dataset: https://www.pch.net/ixp/data • RIPE NCC — YouTube BGP hijacking case study: https://www.ripe.net/about-us/news/youtube-hijacking-a-ripe-ncc-ris-case-study/ • DE-CIX — 25 Tbps record press release and 30th anniversary: https://www.de-cix.net/en/about-de-cix/media/press-releases/de-cix-hits-new-global-peak-traffic-record-with-25-terabits-per-second-data-throughput • AMS-IX — 2024 milestones: https://www.ams-ix.net/ams/news/ams-ix-worldwide-internet-milestones-in-2024 • LINX — History: https://www.linx.net/about/history-of-linx/ • Internet Society — Kenya/Nigeria local traffic study: https://www.internetsociety.org/blog/2020/06/eighty-for-africa/ • Internet Society Pulse — Public peering in the hyperscale era (July 2026): https://pulse.internetsociety.org/en/blog/2026/07/public-peering-remains-important-in-the-hyperscale-era/ • APNIC Blog — Peering capacity at public IXPs (June 2026): https://blog.apnic.net/2026/06/26/peering-capacity-at-public-internet-exchanges-what-the-data-reveals/ • Giotsas et al. — "Detecting Peering Infrastructure Outages in the Wild": https://www.de-cix.net/_Resources/Persistent/f/3/3/c/f33c2aeaf1d05640a27cf82e9f41f4715227f214/Detecting%20Peering%20Infrastructure%20Outages%20in%20the%20Wild.pdf • Fanou — "On the Diversity of Interdomain Routing in Africa": https://labs.ripe.net/author/fanou_roderick/on-the-diversity-of-interdomain-routing-in-africa/ • Duncan Campbell — LINX tapping and gagging orders: https://www.duncancampbell.org/content/london-internet-exchange-prepares-tapping-and-gagging-orders • Euro-IX: https://www.euro-ix.net/ • Cloudflare — IXP explainer: https://www.cloudflare.com/learning/cdn/glossary/internet-exchange-point-ixp/ • Privacy International — GCHQ TEMPORA: https://privacyinternational.org/long-read/1678/gchq-tapping-international-fibre-optic-cables-shares-intel-nsa This podcast episode was fully generated by AI — research, script, voices, and production. Built with Claude, Piper TTS, and automated pipeline tooling.