Area Code 742
Area Code 742 Assignment is in Ontario
(289 and 365 and 905) - (416 and 437 and 647)
(226 and 519 and 548) - (343 and 613) - (249 and 705)
Area Code 742 History:
The Canadian Radio-television and Telecommunications Commission (CRTC) has approved area code 742 as a distributed overlay of area codes 905, 289, and 365 with an implementation date of 10/16/2021. Ten digit dialing (area code + seven digit number) will be necessary in the 709/879 overlay because different homes in the same geographic area can have the same seven digit phone number but each would have a different area code.
Major cities or places in Ontario within area code 742 include:
Area codes 742 will cover a portion of southern Ontario including Niagara Falls and the Greater Toronto Area, and the larger communities of Ajax, Ancaster, Aurora, Brampton, Burlington, Caledon, Cobourg, Dunnville, Fort Erie, Georgetown, Hamilton, King Township, Maple, Markham, Milton, Mississauga, Newmarket, Oshawa, Richmond Hill, St. Catharines, Stoney Creek, Thornhill, Unionville, Welland, Woodbridge and many smaller surrounding communities in the area codes 905 and 289 overlay service area.