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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.
ZCTAs or ZIP Code Tabulation Areas are the census equivalent of ZIP codes used for statistical purposes. The reason why regular ZIP codes are not used is because they are defined by routes rather than geographic boundaries. Thus, they have the tendency to overlap and otherwise create difficulties.
Brand new area code allocation post-BigNumber for a new town, chosen to be significantly different from the area codes of the adjacent areas of Gravesend and Dartford. [14] 01988 — Wigtown (WT8) 01989 — Ross-on-Wye, Wye Valley (WV9) 01990 — unused; 0990 was Wentworth (WW0) – numbers were transferred to 0344 [notes 14]
A ZIP Code (an acronym for Zone Improvement Plan [1]) is a system of postal codes used by the United States Postal Service (USPS).
Area codes 201 and 551; Area codes 202 and 771; Area codes 203 and 475; Area codes 205 and 659; Area code 206; Area code 207; Area codes 208 and 986; Area codes 209 and 350; Area codes 210 and 726; Area codes 212, 646, and 332; Area codes 213, 323, and 738; Area codes 214, 469, 972, and 945; Area code 215; Area codes 215, 267, and 445; Area ...
The codes were assigned by NIST and each uniquely identified a state, the District of Columbia, or an outlying area of the U.S. These codes were used by the U.S. Census Bureau, the Department of Agriculture to form milk-processing plant numbers, some cash registers during check approval, and in the Emergency Alert System (EAS).
Although AT&T no longer uses the 500 code, it was supplemented by 533 in 2009, followed by 544 in December 2010. The 566 code was activated in April 2012. [10] In March 2014, the 577 code was also activated. [11] In September 2015 the 588 code was activated. In August 2016 the 522 code was activated. In September 2017 the 521 code was activated.
NPA Year Current region 212: 1947 New York City: Manhattan only; overlays with 332, 646, and 917 : 315: 1947 Syracuse, Utica, Watertown, and north central New York; overlaid by 680.