SSL/TLS Certificate Lookup

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

kogacci.or.jp

SSL/TLS Certificate

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SSL/TLS Certificate for kogacci.or.jp

Valid
Issued by (CA)
Let's Encrypt
Subject
www.kogacci.or.jp
Valid from
Jun 21, 2026
Valid until
Sep 19, 2026 (59 days remaining)
Public key
RSA 2048-bit
Serial
0580FDFB91E58389604E73E74BD77083A25D
SHA-256 fingerprint
61:FD:84:87:9E:EB:BD:CB:37:A5:A8:3B:62:97:24:82:15:BF:27:5C:4C:B4:62:91:52:17:85:50:31:95:27:B2
Chain
YR1 → Root YR → ISRG Root X1
Subject Alternative Names (2)
kogacci.or.jp, www.kogacci.or.jp

Certificate Authority Authorization (CAA)

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