SSL/TLS Certificate Lookup
Check a domain's SSL/TLS certificate — who issued it, when it expires, and whether the chain is trusted
koyanagi-net.co.jp
SSL/TLS Certificate
SSL/TLS Certificate for koyanagi-net.co.jp
Valid- Issued by (CA)
- Japan Registry Services Co., Ltd.
- Subject
- koyanagi-net.co.jp
- Valid from
- Oct 2, 2026
- Valid until
- Dec 30, 2026 (56 days remaining)
- Public key
- RSA 2048-bit
- Serial
- 2AAE220DF1A6F57D5B19B0EF09750F19
- SHA-256 fingerprint
- A5:28:20:86:2C:E1:5B:46:1E:85:20:74:8D:A4:DF:4A:EF:54:1F:08:96:9E:66:42:F8:0F:55:FC:5A:2C:5F:FE
- Chain
- JPRS DV RSA CA 2024 G1 → SECOM TLS RSA Root CA 2024
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 15, 2026.
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Uptime
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DNS changes
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TLS certificate
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