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Michigan's numbering plan expanded from three area codes in 1947 to twelve: 1947: Area codes 313, 517 and 616 are three of the original 86 area codes in the North American Numbering Plan. 1961: Area code 906 was created in the first split of 616. 1993: Area code 810 was created in the first split of 313.
Area code 810 was split off from area code 313 on December 1, 1993, with a permissive dialing period that ended on August 10, 1994. [1] The initial numbering plan area included the counties of Oakland, Macomb, Genesee, Lapeer, St. Clair, and Sanilac as well as small sections of Saginaw, Shiawassee, Livingston, Washtenaw, and Wayne counties north of Detroit.
537 reserved as a fifth area code for the region. 906: Michigan (Upper Peninsula: Sault Ste. Marie, Escanaba, Houghton, Iron Mountain, Marquette, Menominee, etc.) March 19, 1961: split of 616; 907: Alaska (all, except the lone border town of Hyder which uses the BC, Canada area codes of 236, 250, 672, or 778 depending on its assigned number ...
Pages in category "Area codes in Michigan" ... Area code 810; Area code 906; Area code 989 This page was last edited on 24 December 2023, at 10:16 (UTC ...
In 1997, Oakland County, bordering Macomb County to the west, was split from area code 810 as area code 248. Area code 586 was first proposed as an overlay for the 810 territory, to be implemented in 2000. [1] However, overlays were still a new concept at this time, and met with some resistance due to the need for ten-digit dialing. In the face ...
[2] [3] In February 2000, the area code was assigned as a second area code in the county of Wayne in the southeastern part of the U.S. state of Michigan. [4] However, the relief schedule was cancelled in April 2000, and the implementation of the overlay was suspended. [5] Relief planning is in progress, [2] but 2021 estimates do not expect 313 ...
Area code 248 was created in 1997 as a split from area code 810. In 2000, area code 947 was assigned as a relief area code for the area. [ 1 ] In 2001, it was approved as an all-services overlay plan in the 248 numbering plan area, [ 2 ] requiring ten-digit dialing after end of the permissive dialing period, which started on January 26, 2002.
In 1962, AT&T assigned area code 510, then designated as a Service Access Code (SAC) of the format N10, for conversion to dial service of the Teletypewriter Exchange Service (TWX) in the United States. [3] [4] Later in the decade, additional area codes, including 810 were assigned. NPA 810 served every U.S. point west of the Mississippi River.