Area code 575
Template:New Mexico area codes image map Area code 575 is a telephone area code in the North American Numbering Plan (NANP) for the U.S. state of New Mexico. The numbering plan area (NPA) comprises the remainder of the state outside the Albuquerque, Santa Fe, Farmington, and Gallup metropolitan and micropolitan areas, which use area code 505.
Operation of area code 575 became effective on October 7, 2007, splitting from NPA 505. Area code 505 is one of the original area codes established with the North American Numbering Plan in 1947, when it served the entire state.
Since October 2007, it has been the last area code in the United States introduced by an area code split. All new area codes added in the U.S. since have been from overlays, in which a new code is added to the same geographic area as an existing code.
References[edit source | edit]
- "Planning Letter 358: 505 NPA; 2-way Split, Creating 575 NPA – New Mexico" (PDF). North American Numbering Plan Administration. December 21, 2006. Retrieved January 11, 2013.