# Web Filtering - Predefined Categories

SurfControl servers maintain a database of millions of URLs organized into about 40 categories. Although you cannot list the URLs within a category, you can determine the category of a website by using the Test A Site feature on the SurfControl site at http://www.surfcontrol.com.

This page lists all the predefined categories with the SurfControl internal code. You can select the number of categories per page you want to view from the List per page dropdown list. You can view a specific page by selecting it from the Go to page dropdown list.