TLS 1.2 TLS_ECDHE_RSA_WITH_AES_128_GCM_SHA256
Leaf Certificate
Subject duolingo.com
Issuer Amazon RSA 2048 M01
Valid From Nov 25, 2025
Valid Until Dec 24, 2026 (130 days)
Algorithm SHA256-RSA
Subject Alternative Names
duolingo.com
Intermediate
Subject Amazon RSA 2048 M01
Issuer Amazon Root CA 1
Valid From Aug 23, 2022
Valid Until Aug 23, 2030 (1468 days)
Algorithm SHA256-RSA
Intermediate
Subject Amazon Root CA 1
Issuer Starfield Services Root Certificate Authority - G2
Valid From May 25, 2015
Valid Until Dec 31, 2037 (4154 days)
Algorithm SHA256-RSA
Findings
⚠ TLS 1.2 in use
✓ SSL certificate valid (130 days remaining)
✓ Certificate covers 1 domains (SANs)
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