 | This article needs additional citations for verification. (November 2015) |
Area codes 519, 226, 548, and 382 are overlay telephone area codes in the North American Numbering Plan (NANP) for most of southwestern Ontario.
Area code 519 was the initial code of the numbering plan area (NPA). It was created in 1953 from the western portion of area code 416 and the southwestern portion of 613. The numbering plan area is mostly bounded by area code 905, except for Simcoe County which is bordered by 705. Area code 226 was added to the numbering plan area in 2006, and 548 was added in 2015. In 2023, the overlay was expanded again with the addition of area code 382.
The primary incumbent local exchange carrier (ILEC) in the overlay complex is Bell Canada, with numerous other small independent companies that covered vast tracts of rural Ontario. Since competition for service was mandated in 1997, numerous competitive local exchange carriers (CLECs) have also started serving the region.