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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 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 2-digit codes (51–58) and two sets of 3-digit codes (50x, 59x) to serve South and Central America. Zone 6 uses seven 2-digit codes (60–66) and three sets of 3-digit codes (67x–69x) to serve Southeast Asia and Oceania. Zone 7 uses an integrated numbering plan; two digits (7x) determine the area served: Russia or Kazakhstan.
Area codes of Alabama. The U.S. state of Alabama is served by six area codes. When the North American Numbering Plan was first defined in 1947, Alabama was a single numbering plan area (NPA), with area code 205. This configuration existed until 1995 when area code 334 was added for the southeastern part of the state.
To find the richest area codes, the top-three highest mean incomes per area code were averaged to come up with the mean income for the entire area code. To find the poorest area codes, the bottom ...
The numbering plan area was further reduced in 1998, when the northern and eastern portions were assigned area code 256. [1] In October 2019, area code 659 was added as a second area code to the 205 numbering plan area, creating as an overlay plan for the region. This change mandated ten-digit dialing for all calls. [2] [3]
The second area code, 202, was assigned to the District of Columbia. The allocation of area codes was readjusted as early as 1948 to account for inadequacies in some metropolitan areas. For example, the Indiana numbering plan area 317 was divided to provide a larger numbering pool in the Indiana suburbs of Chicago (area code 219). [citation needed]
Area codes 315 and 680 are telephone area codes of the North American Numbering Plan (NANP) for the north-central area of the U.S. state of New York. Area code 315 was installed as one of the original North American area codes in 1947, while area code 680 was added to the numbering plan area (NPA) in an overlay plan in 2017.