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Results for

claude.ai

TLS certificate

The certificate is trusted and in date.

Valid71 days left

Certificate

Issuer
E8 (Let's Encrypt)
Subject
claude.ai

Validity

Valid from
May 15, 2026
Valid to
Aug 13, 2026

Connection

Protocol
TLSv1.3
Key
ECDSA prime256v1
Cipher
TLS_AES_256_GCM_SHA384 (TLSv1.3)

Subject alternative names (3)

  • claude.ai
  • staging.claude.ai
  • www.claude.ai

Chain

  1. 01

    claude.ai

    issued by E8 (Let's Encrypt)

  2. 02

    E8 (Let's Encrypt)

    issued by ISRG Root X1 (Internet Security Research Group)

  3. 03

    ISRG Root X1 (Internet Security Research Group)

    root

Fingerprint

SHA-256
C3:02:EA:5B:64:4C:DC:76:58:A1:60:AE:F1:9A:FF:53:BB:03:A9:F7:C1:CC:3F:CB:02:47:4D:96:5A:5A:E2:DA
Serial number
05C1DD3EDAEF80F3D3E7B4E26E848BAADA58