Free download
4G Proxies USA Proxy Tester
Cheap day passes still deserve a proper check. Run the app, paste the lines you bought and see which ones reach your target site and how quickly.
What it does
- Auto-detects HTTP, HTTPS, SOCKS5 and SOCKS4.
- Checks any destination URL through each proxy.
- Shows exit IP, carrier, city, latency.
- Location by five GeoIP databases, disagreements flagged.
- TCP fingerprint: OS, TTL, MTU, MSS, JA4T.
- Header leak check (X-Forwarded-For, Via).
- Speed test through every line.
- Tests VLESS, WireGuard and OpenVPN profiles.
- Exports working lines or a CSV report.
- Loads your account proxies by API key.
- Linux command-line build for servers.
- Free, no account needed, any proxy source.
Rather not install anything?
Or use the web proxy checker.