SSL/TLS Certificate Lookup
Check a domain's SSL/TLS certificate — who issued it, when it expires, and whether the chain is trusted
ja-kyodo-s.jp
SSL/TLS Certificate
SSL/TLS Certificate for ja-kyodo-s.jp
Valid- Issued by (CA)
- Let's Encrypt
- Subject
- www.ja-kyodo-s.jp
- Valid from
- Nov 10, 2026
- Valid until
- Feb 8, 2027 (88 days remaining)
- Public key
- RSA 2048-bit
- Serial
- 06FA05F2FB2D936228108015E3D43CFD2686
- SHA-256 fingerprint
- 3A:0D:25:38:40:76:B4:A8:A2:D1:8F:21:76:40:F7:B6:C4:0A:69:F6:0D:50:61:44:39:E5:A7:F4:22:35:57:42
- Chain
- YR1 → Root YR → ISRG Root X1
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 Oct 30, 2026.
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Uptime
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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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