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Numbering plan areas and area codes since May 2001 September 1997 – May 2001 July 1988 – September 1997 October 1947 – July 1988. Massachusetts is divided into five distinct numbering plan areas (NPAs), which are served by nine area codes in the North American Numbering Plan (NANP), [1] organized as four overlay complexes and a single-area code NPA.
Area code 262 is a telephone area code in the North American Numbering Plan for the southeastern part of the U.S. state of Wisconsin. The numbering plan area comprises suburbs that are a part of the Milwaukee and Chicago metropolitan areas. The area code was created on September 25, 1999, in an area code split of area code 414.
The area code was created in a split of area code 515 on July 9, 2000, which was the first split in Iowa since the establishment of the area code system in 1947. In 2006, various companies began using Iowa's 641 as a number to access voice over IP gateways, including one which purported to allow users to "call China for free". [ 1 ]
Area code 904 was created in an area code split of area code 305 in 1965. In 2024, the numbering plan received a second area code, 324 , through the creation of an overlay complex to mitigate central office code exhaustion and provide additional telephone numbers in the area.
Area code 945 was selected as the fourth area code in the Dallas overlay, after receiving approval from the Public Utility Commission of Texas. [2] Central office code assignments for NPA 945 have been available since January 15, 2021, [3] but can only be requested after all existing area codes are exhausted. [4]
For international access the NANP is assigned the country code 1, which is dialed as a prefix in the international E.164 telephone numbering plan.. The trunk prefix for dialing long-distance calls, across numbering plan area (NPA) boundaries within Canada or to other NANP countries, is also 1.
A Canadian postal code (French: code postal) is a six-character string that forms part of a postal address in Canada. [1] Like British, Irish and Dutch postcodes, Canada's postal codes are alphanumeric.
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