SSL/TLS Certificate Lookup
Check a domain's SSL/TLS certificate — who issued it, when it expires, and whether the chain is trusted
tu-dortmund.de
SSL/TLS Certificate
SSL/TLS Certificate for tu-dortmund.de
Expiring soon- Issued by (CA)
- Hellenic Academic and Research Institutions CA
- Subject
- www.tu-dortmund.de
- Valid from
- Aug 13, 2025
- Valid until
- Aug 13, 2026 (19 days remaining)
- Public key
- RSA 4096-bit
- Serial
- 1C00D7CF57D3B00E60F07A756EAAA86F
- SHA-256 fingerprint
- E4:5E:CA:0C:6B:F8:96:61:DA:56:F3:E0:BE:FF:B2:AB:CD:9F:BD:DF:6B:60:CA:E8:8A:A5:12:98:72:37:10:25
- 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 Jul 20, 2026.
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