SSL/TLS Certificate Lookup
Check a domain's SSL/TLS certificate — who issued it, when it expires, and whether the chain is trusted
umin.ac.jp
SSL/TLS Certificate
SSL/TLS Certificate for umin.ac.jp
Hostname mismatch- Issued by (CA)
- SECOM Trust Systems CO.,LTD.
- Subject
- center2.umin.ac.jp
- Valid from
- Jan 20, 2026
- Valid until
- Feb 19, 2027 (213 days remaining)
- Public key
- RSA 2048-bit
- Serial
- 104400B51A908EEAC09BEE90A8CAF20B
- SHA-256 fingerprint
- EE:5D:16:72:43:15:A6:E2:8B:9C:FC:04:10:CA:A0:BD:CB:93:AE:C9:44:0C:A8:6B:BE:E9:17:78:F4:01:0E:9E
- Chain
- SECOM Passport for Web SR 3.0 CA
Certificate Authority Authorization (CAA)
No CAA policy is published for this domain — any certificate authority may issue for it.