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 ijs.si
Valid- Issued by (CA)
- Hellenic Academic and Research Institutions CA
- Subject
- ijs.si
- Valid from
- Dec 18, 2025
- Valid until
- Dec 18, 2026 (146 days remaining)
- Public key
- RSA 4096-bit
- Serial
- 7DD71E8A6FCE6E416B408C9A8332EB3B
- SHA-256 fingerprint
- B4:E3:F0:B1:A0:99:19:BD:E8:02:41:86:D9:EE:7C:2A:DE:46:65:21:EF:38:03:9C:38:16:FA:3C:40:18:B4:D3
- Chain
- GEANT TLS RSA 1 → HARICA TLS RSA Root CA 2021
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 Jul 24, 2026.
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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
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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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