The North American Numbering Plan (NANP) divides the territories of its members into geographic numbering plan areas (NPAs). Each NPA is identified by one or more numbering plan area codes (NPA codes, or area codes), consisting of three digits that are prefixed to each local telephone number having seven digits. A numbering plan area with multiple area codes is called an overlay. Area codes are also assigned for non-geographic purposes. The rules for numbering NPAs do not permit the digits 0 and 1 in the leading position. Area codes with two identical trailing digits are easily recognizable codes (ERC). NPAs with 9 in the second position are reserved for future format expansion.
Area codes in numerical order
Area codes that are not in use are listed in italic type face; and unassignable codes are bolded. The column Date lists either the date or year of assignment before implementation, or the in-service date.
200–299
300–399
400–499
500–599
600–699
700–799
800–899
900–999
Area codes by country, state, province, and regions
Future area codes are in italic type face.
United States
Canada
Caribbean and Atlantic islands
U.S. Pacific territories
Non-geographic area codes
Assignment actions by year
Summary table
See also
- List of future North American area codes
- Original North American area codes
- Telephone numbers in the Americas
References
