SSL/TLS Certificate Lookup
Check a domain's SSL/TLS certificate — who issued it, when it expires, and whether the chain is trusted
komei-f.jp
SSL/TLS Certificate
SSL/TLS Certificate for komei-f.jp
Valid- Issued by (CA)
- Let's Encrypt
- Subject
- komei-f.jp
- Valid from
- Nov 8, 2026
- Valid until
- Feb 6, 2027 (84 days remaining)
- Public key
- RSA 2048-bit
- Serial
- 0643C9F3BBBD78DE22F89AAFFDD89F829E9B
- SHA-256 fingerprint
- BD:0F:A5:79:C9:14:10:1A:07:7D:01:43:BA:7F:C7:BA:1D:FF:4D:1E:7C:A0:CA:5C:7A:8E:11:94:FC:1E:ED:F4
- 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.
We've observed 1 previous certificate for this host. This certificate has been served since Nov 12, 2026.
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Uptime
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DNS changes
We watch NS, MX, CAA, CNAME, TXT and A/AAAA records, and identify the host, network, and ASN behind them, so a real migration or hijack stands out from routine noise.
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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