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Area codes in CT. This is a list of area codes in Connecticut: [1] 203: Covering southwestern Connecticut (Fairfield County (except for Sherman); New Haven County, and the towns of Bethlehem, Woodbury, as well as a small part of Roxbury in Litchfield County); one of the original area codes enacted in 1947; 475: Overlay of 203 (December 2009)
Area code 860 was eventually overlaid with 959, [1] and NPA 203 received a second area code when 475 was added on December 12, 2009. [2] This overlay was first proposed by the Connecticut Department of Public Utility Control in August 1999. Even though area code 475 overlays only 203, all callers in Connecticut (including those in area code 860 ...
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]
203: Connecticut (Bridgeport, ... area code 387 is reserved as a fifth code for the region; 438: ... Northern and eastern Connecticut (Hartford, ...
Area code 860 was created on August 28, 1995, as a numbering plan area split from area code 203, in which the latter was reduced to Fairfield County (except for Sherman) and New Haven County, plus part of Litchfield County (Bethlehem, Woodbury, and a small part of Roxbury). Dialing of area code 860 became mandatory on October 4, 1996.
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Hartford is the capital city of the U.S. state of Connecticut.The city, located in Hartford County, had a population of 121,054 as of the 2020 United States census.Hartford is the most populous city in the Capitol Planning Region and the core city of the Greater Hartford metropolitan area.
Each NPA was identified by a three-digit area code used as a prefix to each local telephone number. The United States received seventy-seven area codes, and Canada nine. The initial system of numbering plan areas and area codes was expanded rapidly during the ensuing decades, and established the North American Numbering Plan (NANP).