SSL/TLS Certificate Lookup
Check a domain's SSL/TLS certificate — who issued it, when it expires, and whether the chain is trusted
uni-wuppertal.de
SSL/TLS Certificate
SSL/TLS Certificate for uni-wuppertal.de
Valid- Issued by (CA)
- Hellenic Academic and Research Institutions CA
- Subject
- *.uni-wuppertal.de
- Valid from
- Nov 10, 2025
- Valid until
- Nov 10, 2026 (84 days remaining)
- Public key
- EC 384-bit
- Serial
- 2B576B02D483B1D0E5C70CDF1389B94A
- SHA-256 fingerprint
- AB:37:93:D4:53:50:25:E6:C4:82:7D:D2:D6:18:55:67:F4:15:37:94:54:4A:D9:47:BD:2A:8C:3E:D1:4A:24:88
- 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, sectigo.com; we couldn't map the serving CA (Hellenic Academic and Research Institutions CA) to one of these identifiers.
Never get surprised by uni-wuppertal.de's certificate expiring
This is today's certificate. Turn on monitoring and we'll watch uni-wuppertal.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.
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