Need a Reliable SOCKS Proxy Checker – Any Recommendations? or How Do You Test if Your SOCKS Proxy Che

I’ve had good luck with IPRoyal’s proxy tester.

It’s web-based but actually reliable, and you can filter by SOCKS4/5.

Also shows geolocation, which is handy if you’re picky about locations.

For verification, I test a few manually with Firefox’s proxy settings.