Proxy Checker
Paste one proxy or a whole list. Line by line, our checker opens a real connection through the proxy to a public what-is-my-IP service, then reports what the far end sees: exit IP, city, ISP and ASN, plus the round-trip time. Then export the ones that work.
| # | Proxy | Status | Protocol | Latency | Exit IP | Location | ISP / ASN |
|---|
How the check works
Start a line with http://, https://, socks4:// or socks5:// to fix its protocol; other lines follow the menu above, where Auto tries HTTP CONNECT, then SOCKS5, then SOCKS4. A line with nothing answering on its port fails straight away, with no wait on each protocol. Latency covers the full round trip through the proxy (connect, tunnel, TLS and one request to the lookup service), so carrier lines read higher than a datacenter by design.
What a good result looks like
A healthy mobile line shows AT&T, T-Mobile or Verizon as the ISP and the metro you bought as the city; working lines on a US carrier carry the mark "Working · mobile". Run your list twice on a held sticky session and each line's exit IP should not change. When a line fails on HTTP but works on SOCKS5, point your tool at the SOCKS5 port.
Deeper checks
Need fingerprint, bot-detection and leak tests on the same line connection? Use IPFighter's free tools next to this checker:
IP score & lookup ↗ Browser fingerprint ↗ Bot detection ↗ DNS leak test ↗ WebRTC leak test ↗
We use your line credentials for the check and never log or store them. Each run takes up to 200 lines, four at a time, with up to 200 checks per address per ten minutes. Private and internal addresses are refused.
Prefer a desktop app? Download the Mobile Proxies USA tester.