SSL/TLS Certificate Lookup

Check a domain's SSL/TLS certificate — who issued it, when it expires, and whether the chain is trusted

costbm1406.fr

SSL/TLS Certificate

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SSL/TLS Certificate for costbm1406.fr

Hostname mismatch

Issued by (CA): Hellenic Academic and Research Institutions CA
Subject: *.univ-tours.fr
Valid from: Nov 30, 2025
Valid until: Nov 30, 2026 (133 days remaining)
Public key: EC 256-bit
Serial: 14DBE017E342B5F640371F10346AF3B1
SHA-256 fingerprint: 4D:8C:82:80:A9:D9:7F:DE:43:F7:E8:86:1E:80:48:9A:9C:13:66:96:2A:61:46:9B:5E:69:35:06:D3:6E:F7:04
Chain: GEANT TLS ECC 1 → HARICA TLS ECC Root CA 2021 → Hellenic Academic and Research Institutions ECC RootCA 2015

Subject Alternative Names (2)

*.univ-tours.fr, univ-tours.fr

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.