Map of Wisconsin showing area codes
Map of Wisconsin showing area codes

Area codes 608 and 353 are telephone area codes in the North American Numbering Plan for much of southwestern Wisconsin, including the state capital city Madison. Area code 608 was assigned in 1955 to a numbering plan area created from areas with area code 414 and area code 715,[1] and was the third area code created in Wisconsin.[2] Rapid growth of the area, specifically in Dane County, brought the area code close to exhaustion of central office prefixes, with NANPA projections in 2022 projecting the need for relief by late 2023.[3] In September 2022, the Wisconsin Public Service Commission and North American Numbering Plan Administrator (NANPA) announced an overlay complex for the numbering plan area with new area code 353, with an in-service date of September 15, 2023.[4][5] New central office code orders were accepted starting on July 11, 2023, but activatlon is contingent on complete exhaustion of central office codes for 608.

Service area

The counties served by the area codes are Adams, Buffalo, Columbia, Crawford, Dane, Grant, Green, Iowa, Jackson, Juneau, La Crosse, Lafayette, Marquette, Monroe, Richland, Rock, Sauk, Trempealeau, and Vernon.

Cities in the numbering plan area are Madison, Waunakee, Mount Horeb, Verona, Sun Prairie, Monroe, Platteville, Lancaster, Lodi, Portage, Baraboo, Wisconsin Dells, Beloit, Janesville, La Crosse, Prairie du Chien, Prairie du Sac, Sauk City, Viroqua, and Sparta.

Ten-digit dialing

Prior to October 2021, area code 608 had telephone numbers assigned for the central office code 988. In 2020, 988 was designated nationwide as a dialing code for the National Suicide Prevention Lifeline, which created a conflict for exchanges that permit seven-digit dialing. This area code was therefore scheduled to transition to ten-digit dialing by October 24, 2021.[6] That allowed the 353 overlay to be implemented without permissive dialing period.

See also

References

  1. ↑ Notes on Distance Dialing. American Telephone and Telegraph Company. 1956.
  2. ↑ "Add Area Code to State Calls". Racine Journal Times. July 23, 1960. p. 3. Retrieved July 28, 2023 – via Newspapers.com.
  3. ↑ "2022-1_NPA_Exhaust_Projections.pdf" (PDF). March 1, 2022.
  4. ↑ "Planning Letter 605: NPA 353 and 608 All-Services Overlay (Wisconsin)" (PDF). NANPA. 2022-11-09. Retrieved 2023-07-29.
  5. ↑ Reigstad, Logan (2022-09-22). "New 353 area code to launch in south-central, southwestern Wisconsin in late 2023". Channel3000.com. Retrieved 2023-02-23.
  6. ↑ "Transition to 10-digit dialing (for 988 as 3-digit access to National Suicide Prevention Hotline)" (PDF). North American Numbering Plan Administrator. January 8, 2021. Retrieved March 9, 2021.
Wisconsin area codes: 262, 414, 534/715, 608, 920
North: 534/715
West: 507, 563 353/608 East: 262, 274/920
South: 779/815
Illinois area codes: 217, 224/847, 309, 312, 331/630, 618, 708, 773, 779/815, 872
Iowa area codes: 319, 515, 563, 641, 712
Minnesota area codes: 218, 320, 507, 612, 651, 763, 952
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