There are a few different ways to check if an IP is proxy. Some methods involve monitoring traffic patterns, analysing IP address headers, checking IP reputation databases and performing reverse DNS lookups. Others include analyzing network behavior and implementing geolocation checks. Using these methods can help mitigate potential threats and protect online privacy.

Generally, people or entities that want to detect if an IP is a proxy are looking to block access to the proxy and therefore the person behind it. This article is geared towards proxy users (not proxy blockers) in order to give them the tools they need to better understand the technology and run tests on free proxies and ad-supported proxies.

Check if IP is Proxy: Identifying Proxy Servers

One of the easiest ways to check if IP is a proxy is by using a free web application that offers this functionality. Some examples of this can be found on websites such as WhatIsMyIPAddress. This website has a simple interface, isn’t cluttered with advertisements, and can provide a variety of information about an IP address.

The most basic of these is the location that the IP address is based in. This can be easily spotted through the information that the check provides, such as cities and latitude/longitude coordinates. If the location of the IP address looks like it is somewhere that would be a reasonable place for someone to reside and buy internet, then it is likely that it is a proxy. If the location is outside of a user’s country, then it is even more likely that it is a proxy.