SSL/TLS Certificate Lookup

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

gemba-c.co.jp

SSL/TLS Certificate

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SSL/TLS Certificate for gemba-c.co.jp

Valid
Issued by (CA)
Let's Encrypt
Subject
www.gemba-c.co.jp
Valid from
May 23, 2026
Valid until
Aug 21, 2026 (30 days remaining)
Public key
RSA 2048-bit
Serial
05F3497D21BA38EC8AD5FEECCF6F7A7AF05D
SHA-256 fingerprint
50:44:96:29:CC:DC:19:6A:31:69:A7:78:34:19:10:BF:DF:F3:48:E8:B0:B4:BE:31:01:A1:1F:D8:04:E7:51:D0
Chain
R13 → ISRG Root X1
Subject Alternative Names (2)
gemba-c.co.jp, www.gemba-c.co.jp

Certificate Authority Authorization (CAA)

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