https://www.infoq.com InfoQ Post-Mortems feed https://www.infoq.com/news/2026/02/cname-rfc-cloudflare-outage/?utm_campaign=infoq_content&utm_source=infoq&utm_medium=feed&utm_term=Post-Mortems <img src="https://res.infoq.com/news/2026/02/cname-rfc-cloudflare-outage/en/headerimage/generatedHeaderImage-1769435290840.jpg"/><p>In a recent article titled "What came first- the CNAME or the A record?" Cloudflare explains how an unclear RFC specification caused the popular Cloudflare’s 1.1.1.1 service to break. After identifying the breakage and the ambiguity in older DNS standards regarding record order, Cloudflare proposes a clarified specification.</p> <i>By Renato Losio</i> Network Programming Infrastructure Networking DNS Post-Mortems Cloudflare Incident Response IETF DevOps Development news Sat, 07 Feb 2026 11:32:00 GMT https://www.infoq.com/news/2026/02/cname-rfc-cloudflare-outage/?utm_campaign=infoq_content&utm_source=infoq&utm_medium=feed&utm_term=Post-Mortems Renato Losio 2026-02-07T11:32:00Z /news/2026/02/cname-rfc-cloudflare-outage/en