Check a hostname
Type a hostname. Certline connects, reads the certificate the server presents, and reports what it found.
Hostname only — no https:// prefix needed. Certline connects on port 443 and checks only the name you type.
No report yet
Enter a hostname above. The report appears here.
Check did not complete
Expiry date
Issuer
Subject
Covered hostnames (SANs)
Chain presented by the server