TLS 1.3 TLS_AES_256_GCM_SHA384
Leaf Certificate
Subject nngroup.com
Issuer Starfield TLS Intermediate CA DV - R1v1
Valid From Jun 25, 2026
Valid Until Sep 23, 2026 (37 days)
Algorithm SHA256-RSA
Subject Alternative Names
nngroup.comwww.nngroup.com
Intermediate
Subject Starfield TLS Intermediate CA DV - R1v1
Issuer Starfield TLS Root CA - R1
Valid From Aug 27, 2025
Valid Until Aug 23, 2040 (5120 days)
Algorithm SHA256-RSA
Intermediate
Subject Starfield TLS Root CA - R1
Issuer Starfield Root Certificate Authority - G2
Valid From Sep 24, 2025
Valid Until Dec 31, 2037 (4155 days)
Algorithm SHA256-RSA
Findings
✓ TLS 1.3 supported
✓ SSL certificate valid (37 days remaining)
✓ Certificate covers 2 domains (SANs)
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