Area codes 416, 647, and 437

Area codes 416, 647, and 437 are telephone area codes in the North American Numbering Plan (NANP) for the city of Toronto, Ontario, Canada. Area code 416 is one of the original North American area codes created by the American Telephone and Telegraph Company (AT&T) in 1947. Area codes 647 and 437 are additional area codes for the same numbering plan area (NPA), forming an overlay numbering plan.

The incumbent local exchange carrier in the numbering plan area is Bell Canada. Almost all Toronto Bell Canada landlines have area code 416, with 647-numbers allocated disproportionately to a growing mobile telephone market and to competitive local exchange carriers, such as cable and voice-over-IP services. Telephone numbers are portable, with few exceptions for specific services such as pocket pagers.

The competitive local exchange carriers in numbering plan area are Rogers Communications, Telus, and some independent companies.

Demand for telephone numbers with area code 416 for mobile, foreign exchange and voice over IP service in the 905-suburbs (Durham, Peel, York and Halton regions) has elevated the local significance of these numbers as their local calling area is a superset of that of a suburban number.^[1]