Slack outbound IP ranges
Help-center guidance for firewalls, proxies, and connection issues, plus developer security practices.
Slack
Slack documents outbound IP ranges used for Slack client and integration traffic for corporate firewall planning.
Autonomous systems
Network background
Slack publishes range documentation; underlying hosting is commercial cloud. Prefer Slack’s official lists over ASN guessing.
Third-party hosting & clouds
Amazon Web Services (typical)
AS16509AS14618
Many SaaS providers use AWS; Slack’s doc pages remain authoritative.
Published ranges
Official documentation and feeds for each product—open the links for current ranges and verification guidance.