DNS Diagnostic

Direct DNS checks (UDP with TCP fallback), IPv4/IPv6 aware, with basic abuse controls.

Shareable URL: /index.php?lookup=example.com Try: example.com cloudflare.com google.com
Tip: To make the “parent/TLD” logic match complex suffixes (like co.uk), plug in a Public Suffix List parser and pick the effective TLD+1’s parent zone.