Find telephone area codes on AllAreaCodes.com and 50States.com. Area codes are three-digit numbers that precede phone numbers in the United States and other countries and used when making long-distance telephone calls.
AllAreaCodes.com allows a user to search with a map of area codes or browse a list of area codes. Users can zoom in on the map to view area codes for specific locations in the United States or Canada. The website 50States.com lists area codes found in each state. Users can get more information about what cities fall under specific area codes by clicking on that particular area code.