Proxy Checker
Paste one proxy or a whole list. Whatever you paste, each line gets a real connection through the proxy to a public what-is-my-IP service, and the checker reports the exit IP, city, ISP and ASN the other end sees, and the round-trip time. Then export the ones that work.
| # | Proxy | Status | Protocol | Latency | Exit IP | Location | ISP / ASN |
|---|
How the check works
Pick the protocol per line with a leading scheme (http://, https://, socks4://, socks5://), or let the menu above handle lines without one, where Auto tries HTTP CONNECT, then SOCKS5, then SOCKS4. Lines whose port gives no answer at all fail straight away instead of waiting on every protocol. Every latency figure is a full round trip through the proxy, with connect, tunnel, TLS and one request to the lookup service, so a carrier network reads higher than a datacenter by design.
What a good result looks like
Whatever metro you bought, a mobile line should show that city plus AT&T, T-Mobile or Verizon as ISP, and working lines on a US carrier are marked "Working · mobile". Hold one sticky session through two runs of the list and the exit IP should match. When a line passes on SOCKS5 and fails on HTTP, choose the SOCKS5 port in your tool.
Deeper checks
For fingerprint, bot-detection and leak tests on that same connection, IPFighter's free tools are a good companion to this checker:
IP score & lookup ↗ Browser fingerprint ↗ Bot detection ↗ DNS leak test ↗ WebRTC leak test ↗
Credentials you paste are used for the check and never kept in logs or storage. Paste up to 200 lines per run to be checked four at a time, with up to 200 checks per address per ten minutes. Private and internal addresses are refused.