Area Code 647 – Toronto Overlay
The phone area code for Toronto Overlay is 647 (international format +1 647). Browse local exchange codes (NXX) and carrier assignments below.
📞 Exchange Codes (NXX) for Area Code 647
Select a central office code to view local carrier data and detailed information
Overview of Area Code 647
Area code 647 is a geographic overlay code serving the city of Toronto and its immediate surrounding areas in the province of Ontario, Canada. It was introduced on March 5, 2001, as an overlay to the original 416 area code, which had been in service since 1947. The overlay was required due to the exhaustion of available telephone numbers in the 416 region, driven by the proliferation of mobile devices and fax lines.
Geographic Coverage and Jurisdiction
The 647 area code covers the same geographic territory as 416, which includes the City of Toronto and the municipalities of York, East York, North York, Scarborough, and Etobicoke. This region is the most densely populated in Canada and serves as the country's financial and cultural hub. The administrative jurisdiction falls under the Canadian Radio-television and Telecommunications Commission (CRTC) and the North American Numbering Plan Administration (NANPA).
Dialing Formats and Overlay Considerations
Because 647 is an overlay, 10-digit dialing is mandatory for all local calls within the 416/647/437 area code region. Local calls are placed by dialing the three-digit area code followed by the seven-digit local number. For example, to call a local Toronto number, you would dial 647-555-0199. International callers must dial the country code for Canada (+1), then the area code and number: +1 647 555 0199. Calls from other area codes in North America also require dialing 1 before the area code for toll calls.
Overlay and Additional Codes
In 2013, a second overlay, area code 437, was added to the same region, and a third overlay, 387, is scheduled for introduction in 2025. This means that new numbers in Toronto may be assigned any of these codes, but all are considered local and require 10-digit dialing. The overlay system ensures that existing numbers remain unchanged while new numbers are allocated from the new codes.
Caller Instructions
For local callers within the 416/647/437 region, always dial the full 10-digit number. For callers from outside the region but within North America, dial 1 + area code + number. For international callers, dial the international access code (e.g., 011 from the US) followed by 1 and the number. Remember that 647 numbers are not tied to a specific carrier; they can be ported between providers, including VoIP services, so the geographic location does not always reflect the physical location of the line.