SSL/TLS Certificate Lookup
Check a domain's SSL/TLS certificate — who issued it, when it expires, and whether the chain is trusted
uni-bielefeld.de
SSL/TLS Certificate
SSL/TLS Certificate for uni-bielefeld.de
Valid- Issued by (CA)
- Hellenic Academic and Research Institutions CA
- Subject
- www.uni-bielefeld.de
- Valid from
- Nov 11, 2025
- Valid until
- Nov 11, 2026 (92 days remaining)
- Public key
- RSA 4096-bit
- Serial
- 3A303D0928FAF4800808C8D0DA611111
- SHA-256 fingerprint
- 60:1E:13:91:FF:8B:1C:10:03:CB:67:D1:45:B9:35:6F:8C:04:9A:0F:A0:D2:F4:78:8D:A8:9D:82:74:3B:7B:9E
- Chain
- GEANT TLS RSA 1 → HARICA TLS RSA Root CA 2021 → Hellenic Academic and Research Institutions RootCA 2015
Certificate Authority Authorization (CAA)
CAA restricts issuance to harica.gr, letsencrypt.org, pki.dfn.de, sectigo.com; we couldn't map the serving CA (Hellenic Academic and Research Institutions CA) to one of these identifiers.
This certificate has been served since Aug 1, 2026.
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TLS certificate
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