SSL/TLS Certificate Lookup
Check a domain's SSL/TLS certificate — who issued it, when it expires, and whether the chain is trusted
ub-friends.at
SSL/TLS Certificate
SSL/TLS Certificate for ub-friends.at
Valid- Issued by (CA)
- Hellenic Academic and Research Institutions CA
- Subject
- ub-friends.at
- Valid from
- Mar 2, 2026
- Valid until
- Mar 2, 2027 (206 days remaining)
- Public key
- EC 256-bit
- Serial
- 6948B78DB04E3FD6963BA13596C43B37
- SHA-256 fingerprint
- 5B:3A:D8:29:9C:E4:17:D0:43:18:64:00:EF:95:C8:E0:46:B4:73:03:3A:31:64:C5:E2:D8:FF:70:30:6A:92:56
- 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; we couldn't map the serving CA (Hellenic Academic and Research Institutions CA) to one of these identifiers.
Never get surprised by ub-friends.at's certificate expiring
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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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