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Results for

slack.com

TLS certificate

The certificate is trusted and in date.

Valid30 days left

Certificate

Issuer
R13 (Let's Encrypt)
Subject
slack.com

Validity

Valid from
Apr 04, 2026
Valid to
Jul 03, 2026

Connection

Protocol
TLSv1.3
Key
RSA 2048
Cipher
TLS_AES_256_GCM_SHA384 (TLSv1.3)

Subject alternative names (2)

  • *.slack.com
  • slack.com

Chain

  1. 01

    slack.com

    issued by R13 (Let's Encrypt)

  2. 02

    R13 (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
67:BE:C3:76:96:A8:04:37:9F:9A:CA:DB:BD:75:F7:73:92:FE:15:7A:13:6B:5D:37:B7:BD:D3:E6:69:6F:3F:94
Serial number
05BD89B1D225CBC9EE966D81EC660D3EAC6A