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Format. NYX NXX-XXXX. Access codes. Country code. 1. International access. 011. List of dialing codes. 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.
All area codes begin with the number 0. The operator code for fixed (landline) numbers is "y". "zzzzzz" denotes the primary telephone number, which has six digits. Mobile numbers start with the mobile operator code (which begins from 07X, followed by seven digits for the main telephone number).
The format and allocation of local telephone numbers are controlled by each nation's respective government, either directly or by sponsored organizations (such as NANPA in the US or CNAC in Canada). In the United States, each state's public service commission regulates, as does the Federal Communications Commission .
E.164 defines a general format for international telephone numbers. Plan-conforming telephone numbers are limited to only digits and to a maximum of fifteen digits. [1] The specification divides the digit string into a country code of one to three digits, and the subscriber telephone number of a maximum of twelve digits.
E.164 specifies that a telephone number consist of a country code and a national telephone number. National telephone numbers are defined by national or regional numbering plans, such as the European Telephony Numbering Space, the North American Numbering Plan (NANP), or the UK number plan.
Ten-digit dialing is a telephone dialing procedure in the countries and territories that are members of the North American Numbering Plan (NANP). It is the practice of including the area code of a telephone number when dialing to initiate a telephone call.
Microsoft canonical address format for telephone numbers derives from E.123 international notation by allowing explicit indication of area code with parentheses. The canonical format is used by the Telephony API (TAPI) , a Windows programming interface for dial-up fax, modem, and telephone equipment.
Telephone numbers in the Americas. The prefixes in the Americas start with one of 1,2,5. All countries in the Americas use codes that start with "5", with the exception of the countries of the North American Numbering Plan, such as Canada and the United States, which use country code 1, and Greenland and Aruba with country codes starting with ...
Since international telephone numbers can have up to 15 digits, the maximum number of digits to be dialed is 19. For example, to call the number 555-0123 in Washington, D.C. (area code 202 ), United States (country code 1 ), using TIM as the chosen carrier (selection code 41 ), one would dial 00 41 1 202 555 0123 .
Telephone number format. All telephone numbers in Mexico have ten digits, of which the first identifies one of the eight principal geographic regions of the country. Map of principal geographic codes in Mexico.