SSL/TLS Certificate Lookup

Check a domain's SSL/TLS certificate — who issued it, when it expires, and whether the chain is trusted

SSL/TLS Certificate for cogitel-forum.fr

Hostname mismatch
Issued by (CA)
Let's Encrypt
Subject
tecton.fr
Valid from
Jul 19, 2026
Valid until
Oct 17, 2026 (87 days remaining)
Public key
RSA 2048-bit
Serial
05A7334D736A73DCF2DBECDDEB6B47FC93F0
SHA-256 fingerprint
0D:53:84:14:B4:B7:99:29:8B:24:53:03:E9:F9:84:D8:EF:02:FE:A4:0B:2E:F3:AF:67:07:B0:E4:6D:D5:DC:E9
Chain
YR1 → Root YR → ISRG Root X1
Subject Alternative Names (1)
tecton.fr

Certificate Authority Authorization (CAA)

No CAA policy is published for this domain — any certificate authority may issue for it.