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Tip: Shareable URL stays clean (
?lookup=
). Re-runs don’t change the page URL.
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Running DNS checks…
This usually takes a couple seconds.
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DNS Diagnostic
Direct DNS checks (UDP with TCP fallback), IPv4/IPv6 aware, with basic abuse controls.
Domain name
Shareable URL:
/index.php?lookup=example.com
•
Try:
example.com
cloudflare.com
google.com
Test
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.