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SPF Record Checker

Look up and validate SPF TXT records for a domain. Parse mechanisms, count DNS lookups, and review policy strength.

Domain name

Looks up TXT records at the domain root and validates SPF syntax, lookup count, and terminal policy.

SPF checks run from the server with SSRF protections. Nested include lookups are estimated from the published record only.

More Developer Tools

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