SSL/TLS Certificate Lookup
Check a domain's SSL/TLS certificate — who issued it, when it expires, and whether the chain is trusted
uni-greifswald.de
SSL/TLS Certificate
SSL/TLS Certificate for uni-greifswald.de
Valid- Issued by (CA)
- Hellenic Academic and Research Institutions CA
- Subject
- uni-greifswald.de
- Valid from
- Jul 23, 2026
- Valid until
- Feb 7, 2027 (154 days remaining)
- Public key
- EC 384-bit
- Serial
- 4F209869291D3529A6BCC7AEA3B63DA7
- SHA-256 fingerprint
- 01:73:65:5A:10:AC:24:CA:0D:7E:D5:56:C6:FB:CF:AB:95:A2:45:68:9A:1E:00:12:A7:91:0F:5B:78:75:FE:BE
- 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; 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 25, 2026.
Never get surprised by uni-greifswald.de's certificate expiring
This is today's certificate. Turn on monitoring and we'll watch uni-greifswald.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, DNSSEC, CNAME 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.