SSL/TLS Certificate Lookup

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

jansta.jp

SSL/TLS Certificate

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SSL/TLS Certificate for jansta.jp

Valid
Issued by (CA)
Let's Encrypt
Subject
www.jansta.jp
Valid from
Jun 29, 2026
Valid until
Sep 27, 2026 (68 days remaining)
Public key
RSA 2048-bit
Serial
05B129EFFFE32A4070FD817B3B8D5179EA5A
SHA-256 fingerprint
06:4D:51:F6:32:E2:52:84:28:11:1F:F6:1F:B4:70:0E:FE:C1:23:DA:94:F9:E1:47:15:16:3C:0D:17:95:B1:1B
Chain
YR1 → Root YR → ISRG Root X1
Subject Alternative Names (2)
jansta.jp, www.jansta.jp

Certificate Authority Authorization (CAA)

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