SSL/TLS Certificate Lookup

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

osk-pa.or.jp

SSL/TLS Certificate

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SSL/TLS Certificate for osk-pa.or.jp

Valid
Issued by (CA)
Let's Encrypt
Subject
web13.one.ne.jp
Valid from
Oct 27, 2026
Valid until
Jan 25, 2027 (80 days remaining)
Public key
RSA 2048-bit
Serial
05957C27AAA22596B57F98BD3A485AFAE645
SHA-256 fingerprint
41:CA:E3:C3:84:7C:EC:25:74:ED:CD:74:EA:DA:7D:52:EC:70:6D:82:CC:A9:B6:49:2A:BC:AD:DF:96:FF:74:97
Chain
YR1 → Root YR → ISRG Root X1
Subject Alternative Names (15)
ftp.hbs-web.one.ne.jp, ftp.kawai-hp.or.jp, hbs-web.one.ne.jp, kawai-hp.or.jp, mail12.one.ne.jp, member.osk-pa.or.jp, one-test.kawai-hp.or.jp, osk-pa.or.jp, test71.kawai-hp.or.jp, web13.one.ne.jp, www.hbs-web.one.ne.jp, www.kawai-hp.or.jp, www.member.osk-pa.or.jp, www.osk-pa.or.jp, xn--web13-yj0m53hg87c.one.ne.jp

Certificate Authority Authorization (CAA)

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

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TLS certificate

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