Proxy Checker
Paste one proxy or a whole list. For each line, we open a real connection through the proxy to a public what-is-my-IP service and report what the other end sees: the 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
Each line can carry its own scheme at the start (http://, https://, socks4://, socks5://) to set its protocol; lines without one use the menu above, and Auto works through HTTP CONNECT, SOCKS5 and SOCKS4. You won't wait on every protocol: if nothing answers on the port at all, the line fails right away. It's normal for a carrier network to read higher than a datacenter by design, since latency is the full round trip through the proxy: connect, tunnel, TLS and one request to the lookup service.
What a good result looks like
A healthy mobile line shows AT&T, T-Mobile or Verizon as the ISP and a city that matches the metro you bought, and working lines on a US carrier display "Working · mobile". As long as you hold a sticky session, running the list twice should keep the same exit IP. Don't worry if HTTP fails but SOCKS5 works: your tool simply needs the SOCKS5 port.
Deeper checks
For peace of mind on the same connection, IPFighter's free tools add fingerprint, bot-detection and leak tests to this checker:
IP score & lookup ↗ Browser fingerprint ↗ Bot detection ↗ DNS leak test ↗ WebRTC leak test ↗
The credentials you give are used for the check, and we never log or store them. Runs allow up to 200 lines with four checked at once, and addresses up to 200 checks per ten minutes. Private and internal addresses are refused.