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 fstb.ch

Valid
Issued by (CA)
Let's Encrypt
Subject
fstb.ch
Valid from
May 16, 2026
Valid until
Aug 14, 2026 (24 days remaining)
Public key
RSA 2048-bit
Serial
0633A27562E4B1F165EC47263F75AF552D0C
SHA-256 fingerprint
24:C1:C3:01:71:AB:83:1E:D3:CA:9B:36:EE:9A:FA:FD:13:A0:91:1D:2C:44:B2:B8:4F:5D:53:83:AA:0F:F9:73
Chain
R13 → ISRG Root X1
Subject Alternative Names (2)
*.fstb.ch, fstb.ch

Certificate Authority Authorization (CAA)

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