Hi glitcher32,
This plugin is for WordPress only but proxycheck.io as a service can be used pretty much anywhere, you will probably have to integrate it yourself using provided code examples on proxycheck.io but it depends on what you need it for or what software your site is running on and if you are able to make changes to the code.
I am not able to help you with this (I don’t work for them), but if you look through the proxycheck.io website you may find what you need, or they may be able to give you some guidance if you email them, or talk to them in the live chat when they are online.
Rick.
