SSL/TLS Certificate Lookup
Check a domain's SSL/TLS certificate — who issued it, when it expires, and whether the chain is trusted
SSL/TLS Certificate for tu-bs.de
Valid- Issued by (CA)
- Hellenic Academic and Research Institutions CA
- Subject
- www.tu-bs.de
- Valid from
- Jul 22, 2026
- Valid until
- Feb 6, 2027 (84 days remaining)
- Public key
- RSA 4096-bit
- Serial
- 1539846EBD86E422B55AE98D0E561F09
- SHA-256 fingerprint
- 69:6E:C2:3D:E2:89:00:08:5C:73:54:3F:33:50:38:EA:D4:F3:B7:7E:ED:2F:36:02:8B:48:23:85:6C:7D:DE:64
- 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, pki.dfn.de, telesec.de; 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 5, 2026.
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TLS certificate
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