SSL/TLS Certificate Lookup
Check a domain's SSL/TLS certificate — who issued it, when it expires, and whether the chain is trusted
hitora-seikei.jp
SSL/TLS Certificate
SSL/TLS Certificate for hitora-seikei.jp
Valid- Issued by (CA)
- Let's Encrypt
- Subject
- hitora-seikei.jp
- Valid from
- Sep 13, 2026
- Valid until
- Dec 12, 2026 (37 days remaining)
- Public key
- RSA 2048-bit
- Serial
- 05CC4935EF3AF1EFFC11AC2FAF5B371D4305
- SHA-256 fingerprint
- 26:BA:C8:FF:C1:37:E4:87:32:26:9F:79:AB:65:E7:E1:35:74:2F:72:40:0F:C1:AD:B1:73:EC:B5:4F:6A:F6:BE
- 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.
This certificate has been served since Oct 19, 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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