SSL/TLS Certificate Lookup
Check a domain's SSL/TLS certificate — who issued it, when it expires, and whether the chain is trusted
so-kan.co.jp
SSL/TLS Certificate
SSL/TLS Certificate for so-kan.co.jp
Valid- Issued by (CA)
- GlobalSign nv-sa
- Subject
- www.so-kan.co.jp
- Valid from
- Nov 22, 2025
- Valid until
- Dec 24, 2026 (43 days remaining)
- Public key
- RSA 2048-bit
- Serial
- 65F134DE3D61DFE201628981
- SHA-256 fingerprint
- AD:05:D6:DA:23:EE:5B:ED:A3:53:B7:0A:59:24:0C:51:48:32:92:D8:F4:A5:2F:76:60:85:74:57:1B:9A:EE:D5
- Chain
- GlobalSign GCC R6 AlphaSSL CA 2025 → GlobalSign
Certificate Authority Authorization (CAA)
No CAA policy is published for this domain — any certificate authority may issue for it.
This certificate has been served since Nov 6, 2026.
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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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