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It is the largest numbering plan area in the Commonwealth, and extends from the New York state line eastward into Worcester County (only the towns of Hardwick and Warren), while excluding the Franklin County towns of Orange, New Salem, Warwick, and Wendell, which use the overlay of area codes 978 and 351. The most-populous city of area code 413 ...
Numbering plan areas and area codes since May 2001 September 1997 [1] – May 2001 [2] July 1988 [3] – September 1997 [4] [5] October 1947 – July 1988 [6]. Massachusetts is divided into five distinct numbering plan areas (NPAs), which are served by nine area codes in the North American Numbering Plan (NANP), [7] organized as four overlay complexes and a single-area code NPA.
2023: returned to the pool of area codes available for future area code relief; 457: Louisiana (Shreveport–Bossier City, Monroe, Alexandria, Fisher, Tallulah, and most of northern Louisiana) September 25, 2025 [3] to be overlaid on 318; previously a fictitious area code assigned to identify Naked DSL/Dry Loop and dedicated data lines in ...
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).
Much of the City of Los Angeles and several inner suburbs: originally split off from 213 to form a ring around downtown Los Angeles and the city of Montebello on June 13, 1998; in August 2017, the boundary between 213 and 323 was erased to form an overlay. On November 1, 2024, it was overlaid by area code 738. 341: overlay with 510
Area code 617 was assigned to the eastern two-thirds of Massachusetts from roughly the western end of Worcester County to Boston, The Cape and Islands, and the South Coast, while the western part received area code 413. Area code 508 was activated for service on July 16, 1988, in an area code split of 617, [1] with a semicircle around Boston ...
The blue area is assigned area codes 301, 240, and 227; the red area is area codes 410, 443 and 667 The state of Maryland is served by the following area codes: Area codes
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. Since 1995, several relief actions in form of area code splits and overlays have expanded the list of area