About this SSL certificate check
Enter a domain to search the public Certificate Transparency log (crt.sh) for certificates issued to it: issuer, covered names (CN and SANs) and validity dates at a glance, with today-based flags — under 30 days left shows "expiring soon", past validity shows "expired". Ideal for expiry sweeps across your domains or spotting certificates issued in error.
Lookups are relayed through this site's server to the CT log, and the server does not log query content. The search usually takes 3–10 seconds, so please wait after clicking. Results reflect issuance records in the log and may not match the certificate currently deployed; self-signed certificates that never entered the log will not appear.