SSL/TLS Certificate Lookup
Check a domain's SSL/TLS certificate — who issued it, when it expires, and whether the chain is trusted
nagano-sake.or.jp
SSL/TLS Certificate
SSL/TLS Certificate for nagano-sake.or.jp
Valid- Issued by (CA)
- Let's Encrypt
- Subject
- www.nagano-sake.or.jp
- Valid from
- Jul 2, 2026
- Valid until
- Sep 30, 2026 (51 days remaining)
- Public key
- RSA 4096-bit
- Serial
- 0595C603D719E10E4FAF32C859F7AC7EACCE
- SHA-256 fingerprint
- B7:74:8B:E0:42:EF:E5:FF:E0:7D:ED:D7:E2:7C:37:C1:3C:DA:AF:D5:F7:C8:EB:DD:35:C9:AE:DE:C5:89:C4:82
- Chain
- YR2 → Root YR → ISRG Root X1
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
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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