Toronto

Area Code: 417 and 416
Every time you dial a local phone number in Toronto, you have to dial the three-digit area code and then the seven-digit phone number: even if you're dialing from a 416 number to a 416 number. On June 9, 2001, the Greater Toronto Area: a collection of cities including Markham, Richmond Hill, and Mississauga were assigned the 289 area code which now accompanies the existing 905 code.