Who Assigns Area Codes?
The North American Numbering Plan Administration (NANPA) assigns area codes for the countries who participate in the North American Numbering Plan (NANP). These 19 countries are part of either the United States, US Territories, Canada, Bermuda, Anguilla, Antigua & Barbuda, the Bahamas, Barbados, the British Virgin Islands, the Cayman Islands, Dominica, the Dominican Republic, Grenada, Jamaica, Montserrat, St. Kitts and Nevis, St.