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The three area codes are overlay codes for one numbering plan area, among which 410 was the initial area code for the NPA, when it was split from area code 301 in 1991. 443 and 667 found assignment primarily in cellular service and for competitive local exchange carriers, such as Comcast and Cavalier Telephone, when introduced, but have since ...
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
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 ...
once reserved as a third area code for West Virginia, but it was replaced by a 304-932 exchange area code + exchange number in Charleston; 933: not in use; available for non-geographic assignment easily recognizable code (ERC) 934: New York (Suffolk County on Long Island) July 16, 2016: overlaid on 631; 935: not in use; available for geographic ...
It is installed on aircraft such as the Boeing 777, Airbus A330 and Airbus A340. [11] ARINC 633 is the air-ground protocol for ACARS and IP networks used for AOC data exchanges between aircraft and the ground. ARINC 635 defines the protocols for the HFDL network of radios used for communication and messaging between aircraft and HF Ground Stations.
Numbering plan areas in California (blue) and border states. This map is clickable; click on any region shown to visit the page for those area codes.Area codes 657 and 714 are shown in red. Area codes 714 and 657 are telephone area codes in the North American Numbering Plan (NANP) for the southern part of the U.S. state of California.
ca. 25 Oct 1951–1955 by Jan 1955 – Jun 1955 Oct 1958-22 Nov 1989 To 848th Air Defense Sq 849th Aircraft Control and Warning Squadron: Probably Komaki AB, Japan: J-21: ca. 1 Mar 1955–ca. 31 Dec 1957 850th Aircraft Control and Warning Squadron: Itazuke AB, Japan: J-13: 25 Aug 1951-later than 1960 851st Aircraft Control and Warning Squadron ...
Area code 835 was eventually approved by the Public Utility Commission on December 2, 2021. Assignment of central office codes in the new area code began on September 2, 2022. [4] When area codes were introduced in 1947, their middle digit was either 0 or 1. In 1994, area code 610 was the last area code assigned with digit 1 in that position.