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 s-facom.jp

Valid
Issued by (CA)
Let's Encrypt
Subject
s-facom.jp
Valid from
Jun 26, 2026
Valid until
Sep 24, 2026 (47 days remaining)
Public key
RSA 2048-bit
Serial
059CB4760B849BAD8774FC6FDCD328D2D83F
SHA-256 fingerprint
59:63:B3:2B:CC:1D:DD:34:CA:BA:4B:58:CF:76:08:72:19:40:3A:8A:7E:65:14:E2:BC:96:CC:78:66:D2:99:18
Chain
YR2 → Root YR → ISRG Root X1
Subject Alternative Names (2)
s-facom.jp, www.s-facom.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

We visit the site from multiple regions worldwide and email you within minutes if it goes down, with a per-region breakdown so a real outage stands out from a regional blip.

DNS changes

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TLS certificate

We warn you 30, 14, 7, and 1 days before it expires, and flag it if the issuing authority changes or the certificate is unexpectedly replaced.

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