Identifies the city associated with a specific area code and prefix. Also identifies international country codes and the geographical location of the telephone.
All Area Codes
Directory of U.S. area codes by state plus cities within each area code. Also lists Canadian area codes by province or territory.
Canadian Numbering Administrator (CNA)
Provides number administration service for Canadian telecommunications, central office code administration, area codes, and the processing of applications for North American Numbering Plan resources.