SSL/TLS Certificate Lookup
Check a domain's SSL/TLS certificate — who issued it, when it expires, and whether the chain is trusted
kyoto-kcg.ac.jp
SSL/TLS Certificate
SSL/TLS Certificate for kyoto-kcg.ac.jp
Hostname mismatch- Issued by (CA)
- Let's Encrypt
- Subject
- accumu.jp
- Valid from
- Sep 15, 2026
- Valid until
- Dec 14, 2026 (42 days remaining)
- Public key
- RSA 2048-bit
- Serial
- 06256F43E0DF963CECF25B1047810D37F6A0
- SHA-256 fingerprint
- 1E:16:70:9D:61:C1:DA:F1:F6:61:58:38:6B:B9:D3:7B:91:15:A6:15:F0:C3:5F:20:86:DF:5A:9B:76:E8:18:2E
- Chain
- YR1 → 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 24, 2026.
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TLS certificate
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