SSL/TLS Certificate Lookup

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

kogaku-pub.com

SSL/TLS Certificate

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SSL/TLS Certificate for kogaku-pub.com

Valid
Issued by (CA)
DigiCert Inc
Subject
www.kogaku-pub.com
Valid from
Sep 3, 2025
Valid until
Oct 1, 2026 (72 days remaining)
Public key
RSA 2048-bit
Serial
0C6BAD07468938F3610D08F39EACA40D
SHA-256 fingerprint
F1:C5:44:9A:7F:5A:06:F6:DD:1B:AE:30:D1:EF:8B:A5:05:16:04:8E:E1:18:30:0B:34:19:B1:CF:2D:FA:EC:13
Chain
GeoTrust TLS RSA CA G1 → DigiCert Global Root G2
Subject Alternative Names (2)
kogaku-pub.com, www.kogaku-pub.com

Certificate Authority Authorization (CAA)

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