All countries in the Americas use codes that start with "5", with these exceptions: Canada, the United States and some Caribbean countries under the North American Numbering Plan use country calling code 1; and Greenland and Aruba have country calling codes starting with the digit "2", which mostly is used by countries in Africa.
(initial ordering by country)
The North American Numbering Plan (NANP) is a telephone numbering plan for twenty-five regions in twenty countries, primarily in North America and the Caribbean. This group is historically known as World Zone 1 and has the telephone country code 1. Some North American countries, most notably Mexico, do not participate in the NANP.
A telephone numbering plan is a type of numbering scheme used in telecommunication to assign telephone numbers to subscriber telephones or other telephony endpoints. Telephone numbers are the addresses of participants in a telephone network, reachable by a system of destination code routing. Telephone numbering plans are defined in each of the administrative regions of the public switched telephone network (PSTN) and in private telephone networks.
In telecommunications, an area code overlay complex is a telephone numbering plan that assigns multiple area codes to a geographic numbering plan area (NPA). Area code overlays are implemented in territories of the North American Numbering Plan (NANP) to mitigate exhaustion of central office codes in growth areas. The method has been in use since 1992, and has been the preferred and exclusive method of relief since 2007.
International direct dialing (IDD) or international subscriber dialling (ISD) is placing an international telephone call, dialed directly by a telephone subscriber, rather than by a telephone operator. Subscriber dialing of international calls typically requires an international call prefix to be dialed before the country code.
The area code 868 is assigned to Trinidad and Tobago, a member of the North American Numbering Plan (NANP). The telephone numbering plan for the country is known as the National Numbering Plan. It is part of a system used for assigning telephone numbers in Trinidad and Tobago, and functions as a part of the North American Numbering Plan (NANP). It is regulated by the Telecommunications Authority of Trinidad and Tobago, which holds responsibility for telecommunications in the country.
Area code 441 is the telephone area code in the North American Numbering Plan (NANP) for Bermuda. The numbering plan area (NPA) was created on 1 October 1995 in a split of area code 809.
Area code 345 is the local telephone area code of the Cayman Islands. The 345 area code was created during a split from the original 809 area code which began permissive dialing on 1 September 1996 and ended 31 August 1997.
Area code 264 is the telephone area code of Anguilla in the North American Numbering Plan (NANP). The area code was created in a split of the original numbering plan area with area code 809. Permissive dialing started 31 March 1997 and ended on 30 September 1997. The area code is also represented on the telephone dial by the letter sequence ANG.
Area codes 876 and 658 are telephone area codes in the North American Numbering Plan (NANP) for Jamaica.
The integration of the Caribbean telephone networks into the North American Numbering Plan (NANP) began with the assignment of area codes in the Caribbean in 1958, when area code 809 was designated for Bermuda and any other potential participant island countries.
Telephone numbers in Europe are managed by the national telecommunications authorities of each country. The country calling codes start primarily with 3 and 4, however, some countries that by the Copenhagen criteria are considered part of Europe have country codes from the Asia range, starting with 9.
The area code 670 is the telephone area code in the North American Numbering Plan (NANP) for the U.S. Commonwealth of the Northern Mariana Islands (CNMI). It was created with the start of permissive dialing on July 1, 1997. With the end of permissive dialing on July 1, 1998, it replaced the previous International Telecommunication Union country code +670, which is now used by East Timor.
Telephone numbers in Italy are managed by the Autorità per le Garanzie nelle Comunicazioni (AGCOM), a national regulatory authority for the communication industry located in Rome.
The country code 599 was assigned to the Netherlands Antilles, and is in use by Curaçao and the Caribbean Netherlands.
National conventions for writing telephone numbers vary by country. While international standards exist in the form of recommendation E.123 by the sector ITU-T of the International Telecommunication Union (ITU), national telephone numbering plans define the format of telephone numbers assigned to telephones and similar communication endpoints.
A telephone number is a sequence of digits assigned to a landline telephone subscriber station connected to a telephone line or to a wireless electronic telephony device, such as a radio telephone or a mobile telephone, or to other devices for data transmission via the public switched telephone network (PSTN) or other public and private networks.
Area code 721 is the telephone area code in the North American Numbering Plan (NANP) for Sint Maarten, a constituent country of the Kingdom of the Netherlands in the Caribbean. The area code was assigned in 2011 after membership of the country in the NANP became effective. International dialing to the country requires the use of country code 1.
