Ontario area codes
Ontario has 19 area codes. London alone has four. Thunder Bay's 807 is the only one on Eastern and Central Time.
Calling Ontario right now
Calling hours: Mon to Fri, 9 AM to 9:30 PM · Sat to Sun, 10 AM to 6 PM (Canada's CRTC rules)
Calling a lot of them? RegieGO dials up to five lines at once. See the dialer
When can you call Ontario numbers?
Sales calls to homes and cell phones have legal hours, set by Canada's CRTC rules. Hold every number to them, since you can't tell a work line from a personal cell. Each area code's page has its local time now.
What applies in OntarioMon to Fri, 9 AM to 9:30 PM · Sat to Sun, 10 AM to 6 PM
- Canada (CRTC)Mon to Fri, 9 AM to 9:30 PM · Sat to Sun, 10 AM to 6 PMApplies to calls to businesses too. Some provinces add rules the tool doesn't apply, like British Columbia's ban on calls on statutory holidays.CRTC Unsolicited Telecommunications Rules, Part III, s. 23 (opens in a new tab)
Local time comes from the area code, not from where the person is today. Mobiles keep their number when they move. Calling hours here are a guide, not legal advice. Every state's calling hours, with sources
Ontario area code FAQ
How many area codes does Ontario have?
19: 226, 249, 289, 343, 365, 382, 416, 437, 519, 548, 613, 647, 683, 705, 742, 753, 807, 905 and 942.
What time zone are Ontario area codes in?
Eastern Time (EST, UTC-5; EDT, UTC-4 in summer) and Central Time (CST, UTC-6; CDT, UTC-5 in summer). Each code's page says which.
What is the newest Ontario area code?
942, in service since April 26, 2025.
When can you call Ontario numbers?
Mon to Fri, 9 AM to 9:30 PM · Sat to Sun, 10 AM to 6 PM, local time, under Canada's CRTC rules.
Calling Ontario numbers? Reach more of them.
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