Security Tools
Free, instant validators for email authentication, DNS, TLS and web security. Public data only.
SPF Record Checker
Check whether a domain publishes a valid SPF record and enforces it.
DKIM Checker
Detect whether a domain publishes DKIM keys on common selectors.
DMARC Checker
Check a domain's DMARC record and enforcement policy.
DNSSEC Checker
Check whether a domain is DNSSEC-signed.
TLS / Certificate Checker
Check a site's TLS version, certificate issuer and expiry.
Security Headers Checker
Check which HTTP security headers a site sends.
Email Reputation Checker
Check whether a domain's mail server appears on common blocklists.
What Is My IP Address?
See your public IPv4 and IPv6 addresses, and everything your browser reveals to the websites you visit.
Password Breach Checker
Check whether a password has appeared in known breaches — hashed locally, never stored.
Prefer one combined report?
Run a full security report to see every check plus an original Cyber Exposure Score.
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