Proxy Checker
Paste one proxy or a whole list. Our checker opens a real connection through the proxy for each line, reaches a public what-is-my-IP service and reports what that service sees: exit IP, city, ISP, ASN and the round-trip time. Then export the ones that work.
| # | Proxy | Status | Protocol | Latency | Exit IP | Location | ISP / ASN |
|---|
How the check works
Begin a line with a scheme (http://, https://, socks4://, socks5://) and that line uses the protocol it names; without one the menu above applies, and Auto attempts HTTP CONNECT, SOCKS5 and SOCKS4 in that order. A port that gives no answer at all fails the line at once, with no wait on each protocol. Latency covers the entire round trip through the proxy (connect, tunnel, TLS and one request to the lookup service), so expect a carrier network to read higher than a datacenter by design.
What a good result looks like
A mobile line should report AT&T, T-Mobile or Verizon as its ISP and the metro you purchased as its city; working lines on a US carrier carry the label "Working · mobile". Hold a sticky session, run the list a second time, and the exit IP should not change. HTTP failing while SOCKS5 works only means your tool needs the SOCKS5 port.
Deeper checks
IPFighter's free tools complement this checker with fingerprint, bot-detection and leak tests on the same connection:
IP score & lookup ↗ Browser fingerprint ↗ Bot detection ↗ DNS leak test ↗ WebRTC leak test ↗
The check uses your credentials, and we never log or store them. Four lines at a time, up to 200 lines per run, and up to 200 checks per address per ten minutes. Private and internal addresses are refused.
Prefer a desktop app? Download the Stateside Proxies tester.