IP Intelligence is a free Proxy VPN TOR and Bad IP detection tool to prevent Fraud, stolen content, and malicious users. Block proxies, VPN connections, web host IPs, TOR IPs, and compromised systems with a simple API. GeoIP lookup available.

PHP Client for getipintel.net

PHP Geolocation, Proxy, VPN or Tor exit address detection, for free.

Discover the comprehensive guide to Implementing VPN Detection on a PHP Server. This tutorial provides step-by-step instructions on VPN Detection in PHP, using IPHub API for reliable results. Learn how to safeguard your server by Detecting Malicious IPs and understand the techniques to Identify VPN/Proxy/Server IPs on the server side.

Track IP location of clients once they scan a QR code (and force them to be on WiFi & not connected to a VPN for an accurate detection)