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whatsmydns.net vs CAA Test: catalog facts
whatsmydns.net	CAA Test
Free Free to use, with an option to donate.	Free Free to use in the browser.
Web	Web
Checks many record types including MX, TXT and CAA Results from servers in many countries at once	Does one job with a single input field Brief explanation of what CAA records are for
Shows a sample of resolvers, not every network Web only, with no scripting interface described	Only checks CAA records, not the rest of a TLS setup Cannot generate CAA records itself
Web application	Web application
Closed source	Closed source
License not stated	License not stated
No account needed	Not stated if an account is needed
Needs internet	Needs internet
Official website Full listing and sources Checked September 23, 2026	Official website Full listing and sources Checked September 23, 2026

Catalog facts only. Anything “not stated” is unconfirmed. Check full listings for details.