SSL/TLS Certificate Lookup
Check a domain's SSL/TLS certificate — who issued it, when it expires, and whether the chain is trusted
uk-koeln.de
SSL/TLS Certificate
SSL/TLS Certificate for uk-koeln.de
Valid- Issued by (CA)
- Hellenic Academic and Research Institutions CA
- Subject
- *.uk-koeln.de
- Valid from
- Aug 31, 2026
- Valid until
- Mar 18, 2027 (193 days remaining)
- Public key
- RSA 4096-bit
- Serial
- 061843457CED01B23132DCE2F75D0F7E
- SHA-256 fingerprint
- 71:CB:ED:26:48:12:AC:29:D1:2A:8C:52:BF:B3:78:B6:FB:A6:CA:F8:07:D1:31:85:C9:3F:AB:1E:98:82:98:39
- Chain
- GEANT TLS RSA 1 → HARICA TLS RSA Root CA 2021 → Hellenic Academic and Research Institutions RootCA 2015
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 Aug 20, 2026.
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TLS certificate
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