Area codes in Ontario

The area codes of Ontario

Each code with the place its page names, the year or day NANPA’s NPA report puts it in service, the codes it shares its area with, and the central office codes the CNAC central office code report allocates under it whose exchange area is in Ontario. An exchange area is where the regulator recorded a code, not where a subscriber is.

A year alone means NANPA’s date is 1 January of that year, which it uses where it records no day.

Overlays and new area codes

• 226, 382, 519 and 548 serve one area: a number there can carry any of these 4 codes, so the area code alone does not place a number more precisely than the area.
• 249, 683 and 705 serve one area: a number there can carry any of these 3 codes, so the area code alone does not place a number more precisely than the area.
• 289, 365, 742 and 905 serve one area: a number there can carry any of these 4 codes, so the area code alone does not place a number more precisely than the area.
• 343, 613 and 753 serve one area: a number there can carry any of these 3 codes, so the area code alone does not place a number more precisely than the area.
• 416, 437, 647 and 942 serve one area: a number there can carry any of these 4 codes, so the area code alone does not place a number more precisely than the area.
• 343 also serves Quebec: the counts here are Ontario’s part of it.
• 613 also serves Quebec: the counts here are Ontario’s part of it.
• 753 also serves Quebec: the counts here are Ontario’s part of it.

What the CNAC central office code report holds for Ontario

The twelve months run to the table’s own date, so the figures change only when the table does.

Allocated codes by network brand

Each code is counted under the holder the CNAC central office code report lists for it, grouped under today’s network brand. That is the code’s original allocation, never who serves a number today, since numbers move between carriers, and the shares are shares of the regulator’s table, not of subscribers or traffic.

Where these figures come from

The codes, exchange areas, pooling and assignment dates are counted from the CNAC central office code report of 2026-10-18, and the area codes, overlays and in-service dates from NANPA’s NPA report of 2026-10-20. Counts only: no row of either file is republished here. The publisher, its files and its terms are on the data source page. Every area code of Canada is on the Canada page, the codes put in service lately or still to come across North America on new and upcoming area codes, and any number can be read on the free phone number lookup.

Other provinces with more than one area code

• Alberta
• British Columbia
• Manitoba
• New Brunswick
• Newfoundland and Labrador
• Nova Scotia
• Prince Edward Island
• Quebec
• Saskatchewan