14 area codes assigned to Ontario · Eastern Time
226
Ontario
Eastern Time
249
Ontario
Eastern Time
289
Ontario
Eastern Time
343
Ontario
Eastern Time
365
Ontario
Eastern Time
416
Ontario
Eastern Time
437
Ontario
Eastern Time
519
Ontario
Eastern Time
548
Ontario
Eastern Time
613
Ontario
Eastern Time
647
Ontario
Eastern Time
705
Ontario
Eastern Time
807
Ontario
Eastern Time
905
Ontario
Eastern Time
Ontario is served by 14 area codes in the North American Numbering Plan (NANP): 226, 249, 289, 343, 365, 416, 437, 519, 548, 613, 647, 705, 807, 905. All Ontario numbers are in the Eastern Time zone. Click any area code above to see the cities and rate centers it covers, formatted tel: link examples, and to search for available phone numbers.