Here's what DAB has to do. A user requests a URL (web site address) through a browser.

Before the computer even gets the keystrokes, the URL is translated (if necessary) and compared to the URL list. Because this is done with numbers instead of letters (there are only 10 digits! There are 255 characters...) the response is nearly instantaneous. If the site is on the blocked list, the screen is covered, and the violation message is displayed.

A Site not on the list IS NEVER BLOCKED!

Our proprietary automated MudCrawler searches out pornography and other types of sites on the Internet using 44 criteria that we have found to reveal almost all such sites. Those sites not fitting perfectly are viewed by our "MudCrawler" technicians for a final decision. Only by automation can the entire Internet be scanned for URL list block.