SSL Checker

rug.nl

TLS 1.3 TLS_AES_128_GCM_SHA256

Leaf Certificate

Subject www.rug.nl

Issuer GEANT TLS ECC 1

Valid From Dec 1, 2025

Valid Until Dec 1, 2026 (106 days)

Algorithm ECDSA-SHA384

Subject Alternative Names

www.rug.nlwww.groningenuniversity.nlwww.rijksuniversiteitgroningen.nlwww.universityofgroningen.nlrug.nlproduction.ucms.rug.nlwww.universiteitgroningen.nl

Intermediate

Subject GEANT TLS ECC 1

Issuer HARICA TLS ECC Root CA 2021

Valid From Jan 3, 2025

Valid Until Dec 31, 2039 (4884 days)

Algorithm ECDSA-SHA384

Intermediate

Subject HARICA TLS ECC Root CA 2021

Issuer Hellenic Academic and Research Institutions ECC RootCA 2015

Valid From Sep 2, 2021

Valid Until Aug 31, 2029 (1110 days)

Algorithm ECDSA-SHA384

Findings

✓ TLS 1.3 supported

✓ SSL certificate valid (106 days remaining)

✓ Certificate covers 7 domains (SANs)

Want the full picture?

This is just one of 100+ checks BeaverCheck runs in a full website audit.

Run Full Audit →

Other reports for rug.nl

Security Headers

CSP, HSTS, X-Frame-Options grade for this site

DNS Lookup

Query A, AAAA, MX, TXT, NS, CNAME, and SOA records with authoritative timing.

Redirect Checker

Trace the full HTTP redirect chain, flag loops, and surface mixed-content downgrades.

Share this result: