RFC8482 - Saying goodbye to ANY
Mar 15, 2019Marek Majkowski
Summary
This post details the historical context, technical challenges, and community efforts leading to the deprecation of the DNS ANY query type via RFC8482. It explains how Cloudflare's authoritative DNS server and resolver implementations were updated to handle ANY queries by returning HINFO or NOTIMP respectively, simplifying codebases and mitigating DNS amplification attacks.
More from the DNS Infrastructure & Naming Conventions trail
- The keys to the Internet change on October 11, 2026. Are you ready?
- 1.1.1.1 now supports post-quantum DNSSEC, all 2,420 bytes of it
- How we saved 100 terabytes of memory by optimizing 1.1.1.1’s DNS cache
- BGP ORIGIN attribute manipulation and its impact on the Internet
- Cloudflare Internal DNS is now generally available