Phone prefixes in St-Blaise, QC
St-Blaise, QC is a rate centre in the Canadian numbering plan. CNAC records 8 in-service prefixes there, held by 6 carriers and spread across 3 area codes (579, 450, 354).
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
- 8
- Telephone numbers covered
- 80,000
- Carriers
- 6
- Area codes
- 3
- Provinces and territories
- 1
- First assignment
- March 24, 2005
- Most recent assignment
- November 11, 2025
Area codes
Who holds these numbers
Videotron Ltd. holds the largest share at 3 prefixes, 37.5% of the total, ahead of 5 other carriers.
| Carrier | Prefixes | Share | First assigned |
|---|---|---|---|
| Videotron Ltd. | 3 | 37.5 % | 2005 |
| Bell Canada | 1 | 12.5 % | — |
| Fibernetics Corporation | 1 | 12.5 % | 2021 |
| ISP Telecom Inc. | 1 | 12.5 % | 2020 |
| IXICA Communications Inc. | 1 | 12.5 % | 2022 |
| TELUS Quebec | 1 | 12.5 % | 2025 |
Allocated prefixes
All 8 in-service prefixes, grouped by rate centre.
St-Blaise, QC
354-799 · 450-291 · 450-930 · 450-945 · 579-419 · 579-432 · 579-512 · 579-889
Nearby rate centres
| Rate centre | Province | Prefixes | Carriers |
|---|---|---|---|
| Montreal | QC | 1,272 | 23 |
| Quebec | QC | 282 | 16 |
| Ottawa-Hull | QC | 122 | 18 |
| Sherbrooke | QC | 104 | 17 |
| Trois-Rivieres | QC | 71 | 16 |
| Chicoutimi | QC | 64 | 16 |
| Granby | QC | 52 | 16 |
| Alma | QC | 48 | 13 |
| Joliette | QC | 48 | 16 |
| St-Jerome | QC | 46 | 12 |
| Drummondville | QC | 45 | 17 |
| St-Hyacinthe | QC | 42 | 17 |
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.