SSL/TLS Certificate Lookup
Check a domain's SSL/TLS certificate — who issued it, when it expires, and whether the chain is trusted
kunststofftechnik-studium.com
SSL/TLS Certificate
SSL/TLS Certificate for kunststofftechnik-studium.com
Hostname mismatch- Issued by (CA)
- Hellenic Academic and Research Institutions CA
- Subject
- p-typo3.im.jku.at
- Valid from
- Nov 21, 2025
- Valid until
- Nov 21, 2026 (16 days remaining)
- Public key
- RSA 4096-bit
- Serial
- 2D559BA49F115DF39F3D9B29314FE9BD
- SHA-256 fingerprint
- B7:55:95:88:A5:AA:F2:0C:18:B0:09:EB:98:B5:AD:7C:1E:63:35:19:C7:8E:05:1F:A5:FB:3A:DB:07:91:C4:EC
- 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, 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 Sep 19, 2026.
Never get surprised by kunststofftechnik-studium.com's certificate expiring
This is today's certificate. Turn on monitoring and we'll watch kunststofftechnik-studium.com 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.