SSL/TLS Certificate Lookup
Check a domain's SSL/TLS certificate — who issued it, when it expires, and whether the chain is trusted
kojin-hp.jp
SSL/TLS Certificate
SSL/TLS Certificate for kojin-hp.jp
Valid- Issued by (CA)
- Japan Registry Services Co., Ltd.
- Subject
- www.kojin-hp.jp
- Valid from
- Apr 13, 2026
- Valid until
- Sep 30, 2026 (46 days remaining)
- Public key
- RSA 2048-bit
- Serial
- 2F5B477E94578751CCDB4624CE809D56
- SHA-256 fingerprint
- B9:71:24:8B:25:9D:36:9D:81:0A:19:40:48:F5:33:D7:D6:DC:1D:78:82:64:FF:8F:06:5D:5C:F5:B1:F1:5F:FF
- Chain
- JPRS Domain Validation Authority - G4
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
We watch NS, MX, CAA, DNSSEC, CNAME 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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