SSL/TLS Certificate Lookup
Check a domain's SSL/TLS certificate — who issued it, when it expires, and whether the chain is trusted
SSL/TLS Certificate for utu.fi
Valid- Issued by (CA)
- Hellenic Academic and Research Institutions CA
- Subject
- utu.fi
- Valid from
- Jul 23, 2026
- Valid until
- Feb 7, 2027 (198 days remaining)
- Public key
- EC 256-bit
- Serial
- 71E96EA103CE12A337112D9170D8E4D4
- SHA-256 fingerprint
- BF:3B:3E:EA:4A:CA:09:54:04:AD:8B:9B:76:24:2E:A5:48:AD:83:90:3E:D9:11:1A:1C:23:B4:58:CC:3D:27:AE
- 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 awstrust.com, harica.gr; we couldn't map the serving CA (Hellenic Academic and Research Institutions CA) to one of these identifiers.
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This is today's certificate. Turn on monitoring and we'll watch utu.fi 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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