Using an IP lookup is a great way to check if IP is proxy. It can tell you who the IP belongs to, and also where it is located. However, it is not the only method.

Another option is to use an application on your computer. This type of application is free, although paid versions are usually more comprehensive. Most of these tools are built to encourage users to sign up for a service.

One thing to remember about these applications is that they are not always the best at detecting proxies. For example, they can miss on the most obvious of the same – the user agent.

Look at the Internet Service Provider

Unlike a web application, an IP lookup will not tell you which server is behind the one you’re checking. But it will give you the latitude and longitude of the IP, as well as the organization name. You can then see which city, state, and country it is in. If it’s not in your country, then you’ll need to get to that destination to find out.

There are many different types of proxies. They are divided into two major groups – residential and datacenter. Datacenter proxies are associated with a large server center. These are the ones that are typically found in the middle of the U.S., and often contain hundreds of thousands of other IP addresses.

The “Wow” factor: A good web application will allow you to check if an IP address is logged in. This is particularly important when you are using a service like Google’s search box. By doing so, you can see how many times the IP has been used and how much time it has spent on that page.