Find the AT&T wireless coverage map in the Maps section on ATT.com. To access the map, navigate to the ATT.com homepage, hover over the Coverage Maps part of the navigation bar and select the Wireless option.
Once the coverage map loads, the website lets you search for a specific location by entering a ZIP code, address, state or landmark in the search field. Alternatively, you can specify the type of coverage or device by selecting the appropriate option located on the left side of the map. The coverage map lets you zoom in and out by using the scroll wheel or by clicking on the plus and minus buttons. The legend below the map explains what type of coverage each color on the map indicates.