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 att.cat

Valid
Issued by (CA)
Google Trust Services
Subject
att.cat
Valid from
Jun 1, 2026
Valid until
Aug 30, 2026 (39 days remaining)
Public key
EC 256-bit
Serial
A620912BDB18BC540EBA039485FA2CC1
SHA-256 fingerprint
F9:35:30:4E:09:E7:4F:3B:A0:F7:44:E2:7E:68:B2:C9:E3:5F:1F:DF:69:C7:58:22:63:B0:A2:D7:26:CB:6B:10
Chain
WE1 → GTS Root R4
Subject Alternative Names (2)
*.att.cat, att.cat

Certificate Authority Authorization (CAA)

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