SSL/TLS Certificate Lookup

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

12309.com

SSL/TLS Certificate

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SSL/TLS Certificate for 12309.com

Expired
Issued by (CA)
Let's Encrypt
Subject
12309.com
Valid from
Apr 22, 2026
Valid until
Jul 21, 2026 (expired 1 day ago)
Public key
RSA 2048-bit
Serial
06E5DBB2EBB2917DACD801A9F9D1279AFC81
SHA-256 fingerprint
30:08:AB:8B:77:9A:8E:1F:0F:30:94:19:F3:8D:7D:63:3B:B2:8F:E2:64:D6:8B:D6:89:EE:29:C4:91:C9:23:90
Chain
R12 → ISRG Root X1
Subject Alternative Names (2)
*.12309.com, 12309.com

Certificate Authority Authorization (CAA)

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