AdvancedAntiVPN is a minecraft plugin which aims to block players using proxies from joining your server
How does it work? The plugin uses an external API (
https://api.iprisk.info/v1/) alongside a customisable list of blocked addresses to check for disallowed IPs.
Features
Block proxy IPs from joining your server
Results from the API are cached for maximum performance
Block proxy IPs from pinging your server (to block server scanners) (requires PacketEvents installed)