SSL Checker

americanexpress.com

TLS 1.3 TLS_AES_256_GCM_SHA384

Leaf Certificate

Subject www.americanexpress.com

Issuer DigiCert Global G2 TLS RSA SHA256 2020 CA1

Valid From Sep 30, 2025

Valid Until Sep 29, 2026 (44 days)

Algorithm SHA256-RSA

Subject Alternative Names

www.americanexpress.comamexsavings.comamericanexpress.comamexmobile.compersonalsavings.comwww.personalsavings.americanexpress.comwww.personalsavings.com

Intermediate

Subject DigiCert Global G2 TLS RSA SHA256 2020 CA1

Issuer DigiCert Global Root G2

Valid From Mar 30, 2021

Valid Until Mar 29, 2031 (1686 days)

Algorithm SHA256-RSA

Intermediate

Subject DigiCert Global Root G2

Issuer DigiCert Global Root G2

Valid From Aug 1, 2013

Valid Until Jan 15, 2038 (4169 days)

Algorithm SHA256-RSA

Findings

✓ TLS 1.3 supported

✓ SSL certificate valid (44 days remaining)

✓ Certificate covers 7 domains (SANs)

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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.

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