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 leson-de.jp

Valid
Issued by (CA)
Let's Encrypt
Subject
leson-de.jp
Valid from
Jul 14, 2026
Valid until
Oct 12, 2026 (22 days remaining)
Public key
RSA 2048-bit
Serial
055E0CA8247C090CE45D2015990DDB8A9D45
SHA-256 fingerprint
8E:68:A2:D3:A5:F6:AB:D8:E7:CC:21:2D:0E:96:4D:4A:A2:F6:4C:BB:C7:49:D4:3C:0B:38:5B:5E:14:1D:5D:7E
Chain
YR2 → Root YR → ISRG Root X1
Subject Alternative Names (2)
leson-de.jp, www.leson-de.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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