Proxy Checker
Paste one proxy or a whole list. The checker opens a real connection per line through the proxy to a public what-is-my-IP service and tells you what the other end sees: exit IP, city, ISP and 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
Write http://, https://, socks4:// or socks5:// at the start of a line to choose its protocol, or leave it off and the menu above chooses, with Auto trying HTTP CONNECT, SOCKS5, then SOCKS4. The line fails straight away if nothing answers on the port at all, so it doesn't wait on every protocol. The latency shown covers the full round trip through the proxy, connect, tunnel, TLS and one request to the lookup service, so it is by design higher on a carrier network than on a datacenter.
What a good result looks like
For mobile, the ISP should say AT&T, T-Mobile or Verizon and the city should be the metro you paid for; working US carrier lines are marked "Working · mobile". Run it twice with a sticky session held, and you should get the same exit IP. If HTTP won't work but SOCKS5 will, use the SOCKS5 port in your tool.
Deeper checks
IPFighter's free tools are a good pair for this checker if you need fingerprint, bot-detection and leak tests on the same connection:
IP score & lookup ↗ Browser fingerprint ↗ Bot detection ↗ DNS leak test ↗ WebRTC leak test ↗
We put your credentials to use for the check and never log or store them. You can do 200 lines per run at most, four at a time, and an address gets at most 200 checks per ten minutes. Private and internal addresses are refused.