About: Area codes 514 and 438

Area codes 514, 438 and 263 are telephone area codes of the North American Numbering Plan (NANP) for Montreal and most of its on-island suburbs, specifically the Island of Montreal and Île Perrot in the Canadian province of Quebec. Area code 514 was one of the original area codes assigned by AT&T in 1947. The original numbering plan area (NPA) was split twice: in 1957 to create area code 819 and in 1998 to create area code 450. In 2006, the entire remaining 514 area was assigned a second area code, 438, in an overlay plan and so ten-digit dialing became mandatory in the Montreal area.