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10-Digit Dialing Overview

Starting April 1, 2023, local 10-digit dialing will be introduced in NL & Labrador (709 area code), northern Ontario (807 area code) and the three exchanges of Yellowknife (including Dettah), Behchokǫ̀, and Whatì (867 area code). Residents will need to dial 10 digits – the area code followed by the seven-digit phone number – for all local calls. The introduction of 10-digit dialing is the result of a decision by the Canadian Radio-television and Telecommunications Commission (CRTC).

Between April 1, 2023 and May 31, 2023, local calls that are dialed using only 7 digits will receive a recorded announcement reminding callers to dial local calls using 10 digits. Starting May 31, 2023, local calls dialed without the area code will not be connected

How to prepare for 10-digit dialing

Residents will need to add their area code to programmed numbers in all of their communications devices and equipment (including phones, auto dialers, computers and lifeline equipment) and verify that their alarm systems are compatible with local 10-digit dialing.

All adjustments need to be completed before May 31, 2023. Additional information is available on the Telecommunications Alliance website at

The Telecommunications Alliance

Canada’s major communications service providers have joined forces to develop a communications campaign informing the public about the introduction of 10-digit dialing and new area codes in certain calling areas. For more information, please visit