SSL/TLS Certificate Lookup

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

koya.co.jp

SSL/TLS Certificate

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SSL/TLS Certificate for koya.co.jp

Valid
Issued by (CA)
Japan Registry Services Co., Ltd.
Subject
www.koya.co.jp
Valid from
Nov 30, 2025
Valid until
Dec 31, 2026 (163 days remaining)
Public key
RSA 2048-bit
Serial
7801A1E0137D26AB2179E990ACA639FE
SHA-256 fingerprint
CE:A8:2F:2F:A6:97:72:33:3A:14:E3:0B:FC:06:15:42:E7:79:C0:6B:29:09:E6:B1:57:82:27:E1:22:E6:A4:E5
Chain
JPRS Domain Validation Authority - G4
Subject Alternative Names (2)
koya.co.jp, www.koya.co.jp

Certificate Authority Authorization (CAA)

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