Two resources you can use to find area codes for phone numbers are the Verizon Wireless website and AllAreaCodes.com. Verizon Wireless has an Area Code Information page with an area code map and area code look-up. AllAreaCodes.com includes both of these resources, as well as an area code list.
Verizon Wireless's area code map is an interactive map that allows you to click on individual states within the country to view area codes within each one. When you click on a state, you have the opportunity to view area code borders on an interactive flash map. The area code look-up feature enables you to search for area code locations by typing an area code into the search box or by selecting a state. Typing an area code into the search box brings up the state, region and time that corresponds to that area code, while choosing a state pulls up a list of all area codes within it.
AllAreaCodes.com also features an interactive area code map. Use the zoom tool to zoom in and view area codes and area code boundaries for individual states. You can also search by phone number, area code or city to match codes and locations.