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Query DNS records through DNS-over-HTTPS for fast and practical hostname diagnostics.
Only includes checks that are practical with stable free APIs and lightweight server-side routes.
Resolve A/AAAA/CNAME/MX/TXT/NS/SOA records through DNS-over-HTTPS.
DNS is the first step in every web request, and misconfigured records cause silent failures. The DNS Lookup Tool queries A, AAAA, MX, CNAME, TXT, NS, and SOA records for any domain — helping you verify changes, debug propagation, and audit email security configurations.
TTL controls how long resolvers cache a record. After a DNS change, allow up to TTL seconds for global propagation — check multiple resolvers to confirm if a change has rolled out.
For email-specific DNS records, use Email DNS Checker to verify SPF, DKIM, and DMARC.
The time it takes for DNS changes to spread across global resolvers. It can take minutes to 48 hours depending on TTL settings.
Mail Exchange records that specify which servers handle email for a domain, with priority values determining delivery order.
Text records store SPF, DKIM, DMARC email authentication data, and domain verification tokens for Google, AWS, and other services.
Check out our technical guides to learn more about how browser-side processing works.
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