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DNS

DNS, DCV & CAA Checker

Look up a domain's A, CNAME, TXT and CAA records to confirm a validation record is live and see which CAs are allowed to issue.

Queries public DNS over HTTPS from your browser. Enter a domain to check its A/CNAME/TXT/CAA plus an email-authentication summary (SPF, DKIM, DMARC), or enter a specific record name (e.g. a _dnsauth or _dmarc name) to confirm it is live.