Phone prefixes in Dunsford, ON
Dunsford, ON is a rate centre in the Canadian numbering plan. CNAC records 4 in-service prefixes there, held by 4 carriers and spread across 3 area codes (249, 683, 705).
Background reading: Canadian area codes, overlays, and what a 416 number actually tells you · Caller ID spoofing, STIR/SHAKEN, and how to actually block calls in Canada
In numbers
- In-service prefixes
- 4
- Telephone numbers covered
- 40,000
- Carriers
- 4
- Area codes
- 3
- Provinces and territories
- 1
- First assignment
- November 29, 2021
- Most recent assignment
- February 19, 2026
Area codes
Who holds these numbers
Bell Canada holds the largest share at 1 prefixes, 25.0% of the total, ahead of 3 other carriers.
| Carrier | Prefixes | Share | First assigned |
|---|---|---|---|
| Bell Canada | 1 | 25.0 % | — |
| Fibernetics Corporation | 1 | 25.0 % | 2021 |
| Rogers Communications Canada Inc. (Cable) | 1 | 25.0 % | 2026 |
| TELUS Integrated Communications | 1 | 25.0 % | 2026 |
Allocated prefixes
All 4 in-service prefixes, grouped by rate centre.
Dunsford, ON
249-619 · 249-631 · 683-227 · 705-793
Nearby rate centres
| Rate centre | Province | Prefixes | Carriers |
|---|---|---|---|
| Toronto | ON | 2,141 | 24 |
| Ottawa-Hull | ON | 441 | 20 |
| Hamilton | ON | 221 | 23 |
| London | ON | 217 | 23 |
| Kitchener-Waterloo | ON | 164 | 21 |
| Windsor | ON | 133 | 20 |
| Brampton | ON | 116 | 20 |
| Oshawa | ON | 110 | 20 |
| St. Catharines-Thorold | ON | 107 | 19 |
| Barrie | ON | 95 | 18 |
| Oakville | ON | 90 | 18 |
| Kingston | ON | 83 | 19 |
Allocation source: Canadian Numbering Administrator (CNAC), the registry that records which carrier a central-office code was originally issued to. An allocation says who was issued the prefix, not who serves the number today: numbers can be ported between carriers, and caller ID can be spoofed outright.