SSL/TLS Certificate Lookup

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

SSL/TLS Certificate for ohsawa-japan.co.jp

Valid
Issued by (CA)
Let's Encrypt
Subject
ohsawa-japan.co.jp
Valid from
Jul 4, 2026
Valid until
Oct 2, 2026 (51 days remaining)
Public key
RSA 2048-bit
Serial
0557A217E74193A013A1102EA758B50ABB86
SHA-256 fingerprint
C3:EC:BA:91:3B:A4:8E:9B:98:B0:E0:46:BC:5B:3C:46:09:52:06:99:6E:B1:D9:0C:D4:65:20:10:2F:1A:87:CC
Chain
YR2 → Root YR → ISRG Root X1
Subject Alternative Names (2)
ohsawa-japan.co.jp, www.ohsawa-japan.co.jp

Certificate Authority Authorization (CAA)

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

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Uptime

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DNS changes

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TLS certificate

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