Free Proxy Tools
Here are the two checks we run ourselves before giving a line to a customer, open to everyone. No sign-up, nothing stored.
Go deeper with IPFighter
To check browser fingerprinting, bot detection, DNS and WebRTC leaks, we suggest customers use IPFighter's free suite, which works well alongside a Mobile Proxy USA line:
IP score & lookup ↗ Browser fingerprint ↗ Bot detection ↗ DNS leak test ↗ WebRTC leak test ↗ IPFighter proxy checker ↗
Recommended antidetect browsers
Which antidetect browser works with a US mobile proxy? Any that accepts an HTTP or SOCKS5 proxy. We recommend Undetectable.io first and GoLogin second; both take a Mobile Proxy USA line in a minute and both have free plans.
Undetectable.io
Offers a free starting plan, Windows and macOS builds, local and cloud profiles. Give each profile its own Mobile Proxy USA line.
Get Undetectable.io ↗GoLogin
A free plan includes 3 profiles; it works on Windows, macOS and Linux and on phones. Add a Mobile Proxy USA line by pasting it as host:port:user:pass.
Get GoLogin ↗Partner links. Our lines are supported by every antidetect browser that takes an HTTP or SOCKS5 proxy, and we recommend the two shown here.
Ready to start?
You get eight live US metros, real carrier SIMs and unlimited rotation. US lines from $2 for two hours or $5 per day.