The North American Numbering Plan - NANP

Facts about the NANP:

  • The North American Numbering Plan serves 20 countries including the United States and several US overseas territories
  • All 20 countries part of the NANP have the same telephone numbering format: YXX-YXX-XXXX where Y can be any digit from 2 through 9 and X can be any digit
  • All countries part of the NANP have country code 1(one)

Countries and their area codes within the NANP:

  • Anguilla: 264
  • Antigua & Barbuda: 268
  • Bahamas (the): 242
  • Barbados: 246
  • Bermuda: 441
  • British Virgin Islands (the): 284
  • Canada: multiple area codes
  • Cayman Islands (the): 345
  • Dominica: 767
  • Dominican Republic (the): 809/829/849
  • Grenada: 473
  • Jamaica: 876/658
  • Montserrat: 664
  • Saint Kitts and Nevis: 869
  • Saint Lucia: 758
  • Saint Vincent and the Grenadines: 784
  • Sint Maarten: 721
  • Trinidad and Tobago: 868
  • Turks & Caicos: 649
  • United States of America: multiple area codes
  • US Territories:
    • American Samoa: 684
    • Guam: 671
    • Northern Mariana Islands: 670
    • Puerto Rico: 787/939
    • US Virgin Islands: 340

Dialing between any 2 NANP countries/territories above:

1 - NANP area code - 7 digit local number

Sample call:

  • From the United States to Jamaica: 1 876 ??? ????

Are calls between 2 NANP countries charged international rates?

With all these countries using the same numbering plan you might think that calls between them are charged domestic rates. This however is not the case: calls between NANP countries or territories are international calls and charged accordingly. The good news here is that these rates are usually not much higher than domestic rates and, in some cases, they are even lower (usually not the case when using a cell phone plan).

Dialing to a NANP country from the rest of the world:

To call from a country outside the North American Numbering Plan to any of the countries regulated by the NANP you should dial the following: exit code - 1 - national subscriber number.

Sample calls:

  • From France to the United States: 00 1 ??? ??? ????
  • From Japan to the Bahamas: 010 1 242 ??? ????