DNSSEC: The Developer's Setup Guide (2026)

DNSSEC has a reputation for being complicated. That reputation is mostly deserved, but the actual setup on modern DNS providers takes about ten minutes. The hard part is understanding what it does and why, so you don't misconfigure it and silently break your domain for a subset of users. This is that guide. What DNSSEC actually does DNS responses have no built-in authentication. When a resolver asks your nameserver "what's the IP for yourapp.com," there's nothing in the original protocol that pr