Ontario Area Codes
Compare 19 in-service area codes in this Canadian numbering region. NANPA groups some neighbouring provinces or territories into one region; the source grouping is shown here.
Ontario numbering at a glance
- In-service area codes
- 19
- Time-zone labels in NANPA data
- Eastern, Central
- Listed in-service or assigned prefixes
- 9,902 · source dated 2026-09-28
These are numbering assignments. The counts do not represent active phone numbers, current carriers, or a caller’s physical location.
Compare area codes in Ontario
| Code | Introduced | Other codes in overlay | Time zones | Listed prefixes |
|---|---|---|---|---|
| 226 | 21-Oct-2006 | 382, 519, 548 | Eastern | 778 |
| 249 | 19-Mar-2011 | 683, 705 | Eastern | 585 |
| 289 | 09-Jun-2001 | 365, 742, 905 | Eastern | 772 |
| 343 | 17-May-2010 | 613, 753 | Eastern | 641 |
| 365 | 25-Mar-2013 | 289, 742, 905 | Eastern | 702 |
| 382 | 17-Jun-2023 | 226, 519, 548 | Eastern | 60 |
| 416 | 01-Jan-1947 | 437, 647 | Eastern | 779 |
| 437 | 25-Mar-2013 | 416, 647 | Eastern | 548 |
| 519 | 01-Jan-1953 | 226, 382, 548 | Eastern | 779 |
| 548 | 04-Jun-2016 | 226, 382, 519 | Eastern | 499 |
| 613 | 01-Jan-1947 | 343, 753 | Eastern | 772 |
| 647 | 05-Mar-2001 | 416, 437 | Eastern | 778 |
| 683 | 18-Jun-2022 | 249, 705 | Eastern | 80 |
| 705 | 01-Jan-1957 | 249, 683 | Eastern | 770 |
| 742 | 16-Oct-2021 | 289, 365, 905 | Eastern | 146 |
| 753 | 26-Mar-2022 | 343, 613 | Eastern | 103 |
| 807 | 01-Jan-1962 | None listed | Eastern, Central | 293 |
| 905 | 04-Oct-1993 | 289, 365, 742 | Eastern | 773 |
| 942 | 26-Apr-2025 | 416, 437, 647 | Eastern | 44 |
Source: NANPA NPA database, dated 2026-09-28. Prefix counts: Canadian Numbering Administrator. View official area-code maps.
Overlay groups in Ontario
Codes in an overlay group can serve the same broad numbering area. A person may keep a number after moving, and the displayed number may be spoofed.
Find a number in Ontario
Open an area-code page above to check a prefix and possible time zones. You can also search Canadian prefixes for their listed exchange area and assigned company.
A code cannot verify the owner of a number. If an unexpected caller asks for money or sensitive information, verify the claim independently.