About 416:
Area code 416 is one of the original 86 area codes created by AT&T and the Bell System in 1947. It originally served southern Ontario including Toronto. In 2001, area code 647 was created as an overlay to area code 416. Currently, the largest city it serves is Toronto, ON, and it overlaps coverage areas with area codes 437 and 647.
Related Cities:
416 serves Toronto in the Canadian province of Ontario. In 2001, 416 was overlaid with area code 647, requiring 10-digit dialing. 416 numbers were officially exhausted in 2005. A third area code is projected to be required by 2020.