LESS GUESSWORK. CLEARER ANSWERS.
SSL checker
Check certificate names, issuer, validity dates and TLS trust for a public hostname.
Your domain is sent to our server and Google Public DNS. SSL checks also make a TLS connection to one public server on port 443. We do not save a report history.
A clear view of your configuration
Run a check to see what was found, when it was checked and what needs attention.
A snapshot, with context
Results reflect one resolver and, for SSL, one server. Network failures are shown separately from missing or invalid records. Checked times display in your timezone.
Know what a check can tell you
One resolver and one TLS endpoint do not prove global DNS propagation, overall security or email deliverability. Certificate revocation is not checked. Email-record inspection is limited: no recursive SPF evaluation, organizational-domain DMARC fallback, external reporting authorization or signed-message DKIM verification. A 12-second deadline, bounded DNS responses, four concurrent server checks and request limits apply. Cancelling hides a report; already-started server work may finish within its deadline.