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In March 2011, central office code relief was implemented by adding area code 531 in an overlay to the same service area of 402. Although the first central office prefix in 531 was not assigned until February 2013, ten-digit dialing has been mandatory for all calls from the 402 territory since Spring 2011.
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.
402/531: Eastern Nebraska, including Omaha and Lincoln, overlaid in 2011 [1] Under the original North American Numbering Plan of 1947, area code 402 covered all of Nebraska. Area code 308 was split off in 1954, and Nebraska retained the same area code configuration for 57 years until the 402/531 overlay, making it one of the longest-lasting in ...
Quick Take: List of Scam Area Codes. More than 300 area codes exist in the United States alone which is a target-rich environment for phone scammers.
Area code 603 in a 1956 map, covering the whole state. Area code 603 is the sole area code for the U.S. state of ... 402 Nashua: Hillsborough: ... 935 Manchester: ...
The state of California was divided into three numbering plan areas (NPAs) with distinct area codes: 213, 415, and 916, for the southern, central, and northern parts of the state, respectively. [ 1 ] In 1950, the boundaries of the numbering plan area were redrawn to produce a division of the northern and central parts along a north–south ...
This is a list of future area codes in the North American Numbering Plan (NANP) that are in the planning stages for relief of central office code exhaustion in the given numbering plan areas (NPAs). The dates are subject to change during implementation as published in the official NANP Administrator Planning Letters .
Interactive map of the numbering plan areas of the Commonwealth of Pennsylvania (blue). This is a list of telephone area codes of Pennsylvania. In 1947, the American Telephone and Telegraph Company divided Pennsylvania into four numbering plan areas (NPAs) and assigned distinct area codes for each.