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All central office prefixes of area code 404 are assigned to service providers, the last having been issued in October 2013. [5] Prefixes in 678 and 770 have also all been allocated, leaving only 470 central office codes available, although previously-used numbers are always available for reassignment to new customers.
912 – Savannah, Reidsville, Vidalia, Waycross, Brunswick, Douglas, and coastal Georgia; 943 - Atlanta and its suburbs, overlay area code that covers same area as 470, 678, and 770. Mobile numbers in metro Atlanta may now have 404, 470, 678, 770, or 943 after originally being kept in 404 by BellSouth
Worldwide distribution of country calling codes. Regions are coloured by first digit. Country calling codes, country dial-in codes, international subscriber dialing (ISD) codes, or most commonly, telephone country codes are telephone number prefixes for reaching telephone subscribers in foreign countries or areas via international telecommunication networks.
Telephone numbers listed in 1920 in New York City having three-letter exchange prefixes. In the United States, the most-populous cities, such as New York City, Philadelphia, Boston, and Chicago, initially implemented dial service with telephone numbers consisting of three letters and four digits (3L-4N) according to a system developed by W. G. Blauvelt of AT&T in 1917. [1]
The North American Numbering Plan (NANP) divides the territories of its members into geographic numbering plan areas (NPAs). Each NPA is identified by one or more numbering plan area codes (NPA codes, or area codes), consisting of three digits that are prefixed to each local telephone number having seven digits.
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 the digit "2", which mostly is used by countries in Africa.
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When the North American Numbering Plan was created in 1947, the entire state of Georgia was assigned area code 404. On July 1, 1954, the southern portion of the state, from Macon southward, was split off with area code 912. Area code 404 was limited to the northern half of the state, from the Tennessee and North Carolina state lines as far ...