FraudLabs Pro Anonymous Proxy Detection is a service that identifies whether an IP address is associated with anonymous proxies, VPNs, TOR nodes, or other proxy types. The tool is designed to help detect potential fraud by identifying users attempting to hide their true location or identity through proxy services. The service supports both IPv4 and IPv6 address lookups and categorizes detected proxies into multiple types including VPN, TOR, PUB (public proxy), WEB (web proxy), RES (residential proxy), CPN, and EPN. The tool provides geolocation information for detected proxy IP addresses, including country, region, and city details. The detection capability is positioned as a fraud prevention measure, as anonymous proxies are commonly used by fraudsters to conceal their tracks during payment crimes and other fraudulent activities. The service offers a lookup interface where users can check individual IP addresses against the proxy database. FraudLabs Pro offers a free plan for fraud detection services that includes this anonymous proxy detection functionality. The tool provides real-time detection results and maintains a list of recently detected anonymous proxies with their associated proxy types and geographic locations.