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DMARC Checker

Look up and parse DMARC DNS records for a domain. Review policy, reporting tags, and SPF alignment hints.

Domain name

Queries TXT records at _dmarc.yourdomain (and the organizational domain when needed). SPF is checked for context. Public domains only.

DNS lookups run from the server with SSRF protections. Results reflect public DNS only.

More Developer Tools

SPF Record CheckerLook up and validate SPF TXT records for a domain. Parse mechanisms, count DNS lookups, and review policy strength.
MX Record LookupLook up mail exchange (MX) DNS records for a domain, sorted by priority with mail host IP resolution.
DNS LookupQuery public DNS records for any domain — A, AAAA, MX, TXT, NS, CNAME, SOA, SRV, CAA, and PTR.
DNS Propagation CheckerCheck DNS record propagation across global public resolvers. Compare answers from Google, Cloudflare, Quad9, and more.
Password GeneratorCreate strong random passwords with custom length, character sets, and strength feedback.
Password Strength CheckerAnalyze password strength with entropy estimates, crack-time projections, and improvement tips.

Part of:Free DNS & Network Tools