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For international access the NANP is assigned the country code 1, which is dialed as a prefix in the international E.164 telephone numbering plan.. The trunk prefix for dialing long-distance calls, across numbering plan area (NPA) boundaries within Canada or to other NANP countries, is also 1.
0–9. Area codes 204, 431, and 584; Area code 250; Area codes 306, 639, and 474; Area codes 418, 581, and 367; Area code 403; Area codes 416, 647, and 437
once reserved as a third area code for West Virginia, but it was replaced by a 304-932 exchange area code + exchange number in Charleston; 933: not in use; available for non-geographic assignment easily recognizable code (ERC) 934: New York (Suffolk County on Long Island) July 16, 2016: overlaid on 631; 935: not in use; available for geographic ...
When dialing a telephone number, the area code may have to be preceded by a trunk prefix or national access code for domestic calls, and for international calls by the international access code and country code. Area codes are often quoted by including the national access code. For example, a number in London may be listed as 020 7946 0321.
The largest telephone numbering plan in North American is the North American Numbering Plan (NANP), serving 25 regions or countries. Other countries maintain an autonomous numbering plan with distinct country codes within the international E.164 specifications by the International Telecommunication Union.
Look at the area code: Start by comparing the phone number’s area code to the list of area codes you should never answer. If it’s on the list, there’s a good chance there’s a scammer on ...
By the early 1960s, DDD had become commonplace in cities and most towns in the United States and Canada. By 1967, the number of assigned area codes had increased to 129 as demand for numbers led to splits of some areas and other countries joined the system. [7]
Country codes are defined by the International Telecommunication Union (ITU) in ITU-T standards E.123 and E.164. The prefixes enable international direct dialing (IDD). Country codes constitute the international telephone numbering plan. They are used only when dialing a telephone number in a country or world region other than the caller's.