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 imt-atlantique.fr

Valid
Issued by (CA)
Hellenic Academic and Research Institutions CA
Subject
*.imt-atlantique.fr
Valid from
Jul 22, 2026
Valid until
Feb 6, 2027 (96 days remaining)
Public key
RSA 4096-bit
Serial
3CC0974B23814A9C310355692479D3DA
SHA-256 fingerprint
ED:C8:CF:B0:F3:B4:13:39:B9:FE:1D:B9:B0:BC:26:EE:83:CB:6C:29:F4:25:FE:09:FC:16:EF:56:BD:5D:5D:D5
Chain
GEANT TLS RSA 1 → HARICA TLS RSA Root CA 2021 → Hellenic Academic and Research Institutions RootCA 2015
Subject Alternative Names (2)
*.imt-atlantique.fr, imt-atlantique.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.

This certificate has been served since Aug 21, 2026.

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