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Area codes · Canada

Area codes in Ontario

  • 19 in service
  • 6 overlay complexes

Reviewed by Sujan ThapaliyaLast updated

What area codes does Ontario use?

Ontario has 19 area codes: 226, 249, 289, 343, 365, 382, 416, 437, 519, 548, 613, 647 and 7 more. The state spans more than one time zone, so check the local time before calling back.
Codes in service
19
Country
Canada
Time zones
ET (UTC−5/−4), Spans Eastern and Central time
Overlay complexes
226/382/519/548, 249/683/705, 289/365/742/905, 343/613/753, 416/437/647, 416/437/647/942
Same territory, more than one code.
Oldest / newest code
1947 / 2025

Directory

How many area codes does Ontario have?

Each page covers where the code is, its time zone, the overlays sharing its territory, and what to do about unwanted calls from it.

19 in-service geographic codes, from the numbering plan administrator's register.
CodeTime zoneOverlaysIn service
226ET (UTC−5/−4)382, 519, 5482006
249ET (UTC−5/−4)683, 7052011
289ET (UTC−5/−4)365, 742, 9052001
343ET (UTC−5/−4)613, 7532010
365ET (UTC−5/−4)289, 742, 9052013
382ET (UTC−5/−4)226, 519, 5482023
416ET (UTC−5/−4)647, 4371947
437ET (UTC−5/−4)416, 6472013
519ET (UTC−5/−4)226, 382, 5481953
548ET (UTC−5/−4)226, 382, 5192016
613ET (UTC−5/−4)343, 753—
647ET (UTC−5/−4)416, 4372001
683ET (UTC−5/−4)249, 7052022
705ET (UTC−5/−4)249, 6831957
742ET (UTC−5/−4)289, 365, 9052021
753ET (UTC−5/−4)343, 6132022
807Spans Eastern and Central timeNone1962
905ET (UTC−5/−4)289, 365, 7421993
942ET (UTC−5/−4)416, 437, 6472025

Overlays

Which codes share the same ground?

An overlay adds a second code across the same geography rather than splitting the region in two, so nobody has to change their number — but every local call then needs ten digits, because seven no longer identifies a number uniquely.

  • 226 / 382 / 519 / 548 — 4 codes over one territory.
  • 249 / 683 / 705 — 3 codes over one territory.
  • 289 / 365 / 742 / 905 — 4 codes over one territory.
  • 343 / 613 / 753 — 3 codes over one territory.
  • 416 / 437 / 647 — 3 codes over one territory.
  • 416 / 437 / 647 / 942 — 4 codes over one territory.

807 has no overlay, so it still maps cleanly to one place.

Unwanted calls

Is a call from a Ontario code likely to be spam?

Not because of the code itself. Every code here serves real people and businesses. What makes an unfamiliar Ontarionumber suspicious is a pattern rather than a prefix: unwanted callers routinely spoof caller ID to display a number in the recipient’s own area, because a familiar code is answered more often. That technique is called neighbour spoofing, and it means the code on your screen is evidence of what the caller wanted you to see rather than where they are.

The practical response is the same for every code: if you do not recognise the number, let it go to voicemail. A caller with a genuine reason leaves a message. If the calls repeat, report them — complaints are one of the strongest inputs into the analytics that get numbers labelled and blocked network-wide, which does more than blocking one number on one handset. There is a fuller treatment in how to block unwanted calls.

If it is your own calls into Ontario going unanswered, the cause is usually the reverse of this: a number with no name attached to it, or one whose reputation was damaged before you rented it. Owning the number and registering a business name against it is what separates a local call that gets answered from one that gets ignored.

Frequently asked questions

How many area codes does Ontario have?
Ontario has 19: 226, 249, 289, 343, 365, 382, 416, 437, 519, 548, 613, 647, 683, 705, 742, 753, 807, 905, 942. That count changes as new overlays go into service, which happens when an existing code runs low on numbers.
What is the main area code for Ontario?
There is no single main code. Ontario is covered by 19 codes, and where two or more overlay the same territory neither is more "correct" than the other — a business on one street can hold numbers in either.
Why do some Ontario numbers need ten digits for a local call?
Because overlays cover the same ground as the original code — 226, 382, 519 and 548; 249, 683 and 705; 289, 365, 742 and 905; 343, 613 and 753; 416, 437 and 647; 416, 437, 647 and 942. Once two codes serve the same street, seven digits no longer identify a number uniquely, so every local call needs the area code too.
Does an area code tell me where the caller is?
Where the number was issued, not where the person is now. Mobile numbers keep their code when their owner moves, and businesses port numbers between locations, so treat a Ontario code as a hint about origin rather than a location.
Can I get a Ontario phone number for my business?
Yes. Local numbers in any in-service code can be provisioned and are yours to keep, port and route. Presenting a number local to the person you are calling measurably lifts answer rates, provided it is a number you own and answer.

Sources

  1. North American Numbering Plan Administrator — NANPAArea code assignments, relief planning, and which codes are in service across the North American Numbering Plan.
  2. ITU-T Recommendation E.164 — The international public telecommunication numbering plan — International Telecommunication UnionThe international number format, the 15-digit maximum, and how country codes and national numbers compose.

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