List of Ontario area codes

This is a list of area codes in the province of Ontario:

226: London, Kitchener–Waterloo, Windsor, and most of Southwestern Ontario; overlays with 519
249: Most of Northeastern and Central Ontario; overlays 705
289: The Niagara Peninsula, Hamilton, Oshawa, and the suburban Greater Toronto Area; overlays with 905 and 365
343: Ottawa and surrounding Eastern Ontario; overlays with 613
365: The Niagara Peninsula, Hamilton, Oshawa, and the suburban Greater Toronto Area; overlays with 905 and 289
416: Toronto; overlays with 647 and 437
437: Toronto; overlays with 647 and 416
519: London, Kitchener–Waterloo, Windsor, and most of Southwestern Ontario; overlays with 226
613: Ottawa and surrounding Eastern Ontario; overlays with 343
647: Toronto; overlays with 416 and 437
705: Most of Northeastern and Central Ontario; overlays with 249
807: Most of Northwestern Ontario
905: The Niagara Peninsula, Hamilton, Oshawa, and the suburban Greater Toronto Area; overlays with 289 and 365

References

Lists of area codes in the North American Numbering Plan

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