DNS Record Analyzer

Check a record you're about to publish — syntax, RFC compliance, and common mistakes — before it goes live. Already live? Domain Check gives you a full snapshot of what's currently published.

Paste one or more record lines (zone-file or provider format). Deep, RFC-aware validation for SPF, DMARC, DKIM, and CAA — the records people most often get wrong pre-deploy; other types get a lighter syntax check. Optional live lookups query Cloudflare's DNS-over-HTTPS resolver directly from your browser.

Scope: this checks the record(s) you paste in isolation — it does not walk includes/CNAME chains, validate a whole zone, or check DNSSEC. For a live, whole-domain snapshot of what's already published, use Domain Check instead.