Published: October 08, 2012
Area code 437 will be introduced on March 25, 2013 as relief for overlay complex 416/647 covering the city of Toronto, Ontario. The new area code will cover the same geographical area. Since 10 digit dialing is already mandatoty in existing overlay complex 416/647, no permissive period is required and no changes wil be made in the way residents of the city of Toronto dial telephone calls.
See official announcement and map (PDF document).
Visit area code 437 page for a list of cities served, map and other info.