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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.
Mobile phones use geographic area codes. Exchanges may service on mobile devices; local numbers are portable between wired and wireless carriers. While area code 600 has been established as a non-geographic code that can be used by mobile phones, the only significant mobile usage has been for satellite phone service in remote regions.
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. [1] 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.
Zone 5 uses eight two-digit codes (51–58) and two sets of three-digit codes (50x, 59x) to serve South and Central America. Zone 6 uses seven two-digit codes (60–66) and three sets of three-digit codes (67x–69x) to serve Southeast Asia and Oceania. Zone 7 uses two digits (7x) to determine the area served: Russia or Kazakhstan.
This list contains the mobile country codes and mobile network codes for networks with country codes between 300 and 399, inclusively – a region that covers North America and the Caribbean. Guam and the Northern Mariana Islands are included in this region as parts of the United States.
The remaining 10% of subscribers are served by smaller, regional providers, mobile virtual network operators (MVNOs), and resellers. [2] Regional providers own and operate transmission facilities that cover a limited area and rely on partnerships with national service providers to connect their customers across Canada.
Area code 709 was expected to be exhausted by 2027. In 2017, area code 879 was assigned as the second area code for Newfoundland and Labrador for relief action by overlay. [3] After being suspended indefinitely in 2021, [4] relief was rescheduled by the CRTC on September 15, 2023, for activation of an overlay on February 17, 2024. [5]
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.