SSL/TLS Certificate Lookup

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

rug.nl

SSL/TLS Certificate

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SSL/TLS Certificate for rug.nl

Valid

Issued by (CA): Hellenic Academic and Research Institutions CA
Subject: www.rug.nl
Valid from: Dec 1, 2025
Valid until: Dec 1, 2026 (132 days remaining)
Public key: EC 256-bit
Serial: 0B1A4F673323A8279F8432580247854B
SHA-256 fingerprint: B4:E3:BE:6E:16:94:A2:20:31:2D:23:4F:E2:87:28:43:46:19:C5:E0:30:92:A4:BC:CD:31:AE:C8:8E:B5:30:E6
Chain: GEANT TLS ECC 1 → HARICA TLS ECC Root CA 2021 → Hellenic Academic and Research Institutions ECC RootCA 2015

Subject Alternative Names (7)

production.ucms.rug.nl, rug.nl, www.groningenuniversity.nl, www.rijksuniversiteitgroningen.nl, www.rug.nl, www.universiteitgroningen.nl, www.universityofgroningen.nl

Certificate Authority Authorization (CAA)

No CAA policy is published for this domain — any certificate authority may issue for it.