Free Security Tools
Check your SSL, security headers, and DNS records — no signup, no limits.
SSL Certificate Checker
Check certificate validity, issuer, expiry date, and chain status.
Checking certificate...
Security Headers Analyzer
Scan any URL for missing HTTP security headers and get a grade.
Scanning headers...
DNS Lookup
Query DNS records for any domain — A, AAAA, MX, TXT, NS, CNAME, SOA.
Looking up records...