Issue
Warehouse syncs start failing with IP not allowed error.
Product
Twilio Segment
Environment
Segment Console
Cause
From July 1st, 2026, Segment started upgrading its warehouse infrastructure to significantly improve reliability and high availability. Moving forward, warehouse syncs will route through a new, multi-zone infrastructure.
Because of this change, Segment will be using new IP addresses to connect to your destination. If your firewall is not updated, it will block these new connections, causing your warehouse syncs to fail.
Resolution
Please pass this information along to your Network Engineering, DevOps, or IT Security team. They will need to add the following two IP ranges to your warehouse firewall allowlist:
New IP Addresses to Add:
Additional Information
Warehouse specific documentation: