Cloudflare 1.1.1.1 DNS Outage Traced to Mis‑configured Data Localization Change
A June‑6 configuration slip in Cloudflare’s Data Localization Suite unintentionally advertised the 1.1.1.1 DNS resolver’s prefixes, pulling the service offline worldwide for 62 minutes on July 14, 2025. The outage crippled name resolution for millions, underscoring the fragility of anycast routing when internal topology changes go unchecked.