Inconsistency between EAS builder IP list and my obtained IP address

Hello Expo community,

I have been trying to install packages using npm on my project with EAS builder. However, I am facing an issue where npm install is failing due to IP restrictions. After checking the official Builder IP addresses list (, I realized that my obtained IP address ( is not listed.

Is there any update on the EAS builder IP list? I would greatly appreciate any assistance or guidance on how to resolve this issue.

Thank you in advance for your help.

It might be related to network migration we had recently in our M1 cluster. Is this happening only on iOS M1 builders?

That sounds likely. It’s a CyberLynk IP address and there’s a very similar address in the build worker IPs list (

IP list is up to date now.


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