SSL/TLS Certificate Lookup
Check a domain's SSL/TLS certificate — who issued it, when it expires, and whether the chain is trusted
uni-jena.de
SSL/TLS Certificate
SSL/TLS Certificate for uni-jena.de
Valid- Issued by (CA)
- Hellenic Academic and Research Institutions CA
- Subject
- www.uni-jena.de
- Valid from
- Jul 22, 2026
- Valid until
- Feb 6, 2027 (88 days remaining)
- Public key
- EC 256-bit
- Serial
- 73561EABB4099CB9433E5F0AF5D9C7F3
- SHA-256 fingerprint
- DC:96:59:D9:29:96:0C:18:F7:08:4C:FE:E3:F5:60:4A:84:0D:7E:C1:C8:70:3F:E7:6A:9F:A6:4D:9D:32:86:65
- Chain
- GEANT TLS ECC 1 → HARICA TLS ECC Root CA 2021 → Hellenic Academic and Research Institutions ECC RootCA 2015
Certificate Authority Authorization (CAA)
CAA restricts issuance to harica.gr, letsencrypt.org, pki.dfn.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 18, 2026.
Never get surprised by uni-jena.de's certificate expiring
This is today's certificate. Turn on monitoring and we'll watch uni-jena.de continuously, notifying you the moment anything moves across all three signals:
Uptime
We visit the site from multiple regions worldwide and email you within minutes if it goes down, with a per-region breakdown so a real outage stands out from a regional blip.
DNS changes
We watch NS, MX, CAA, CNAME, TXT and A/AAAA records, and identify the host, network, and ASN behind them, so a real migration or hijack stands out from routine noise.
TLS certificate
We warn you 30, 14, 7, and 1 days before it expires, and flag it if the issuing authority changes or the certificate is unexpectedly replaced.
Free for your first domain: uptime, DNS, and certificate together. No credit card.