709 area: Newfoundland and Labrador
807 area: Northern Ontario
867 area: Yellowknife, (including Dettah), Behchokǫ̀, and Whatì
Dates to remember
Starting April 1, 2023
Residents and businesses need to adopt 10-digit dialing – the area code followed by the 7-digit phone number – for all local calls. If the area code is not dialed, the caller will hear a reminder message before the call is completed.
Starting May 31, 2023
10-digit dialing will be mandatory: residents and businesses need to dial the area code followed by the 7-digit number for all local calls. If the 10-digit number is not dialed, the call will not be completed.