ISP Telecom Inc.
ISP Telecom Inc. holds 809 in-service central-office prefixes in the CNAC register, covering roughly 8,090,000 telephone numbers. They span 39 area codes and 730 rate centres across 7 provinces and territories, concentrated in ON. Its earliest recorded assignment dates to 2000, its most recent to 2025.
Background reading: Caller ID spoofing, STIR/SHAKEN, and how to actually block calls in Canada · Your rights: caller data, privacy law and persistent callers
In numbers
- In-service prefixes
- 809
- Telephone numbers covered
- 8,090,000
- Carriers
- 1
- Rate centres
- 730
- Area codes
- 39
- Provinces and territories
- 7
- First assignment
- April 6, 2000
- Most recent assignment
- August 25, 2025
Provinces and territories
| Province | Prefixes | Rate centres |
|---|---|---|
| Ontario | 339 | 314 |
| Quebec | 241 | 202 |
| British Columbia | 85 | 83 |
| Alberta | 55 | 52 |
| Saskatchewan | 45 | 45 |
| Nova Scotia | 33 | 33 |
| Manitoba | 11 | 10 |
Area codes
Where these numbers land
| Rate centre | Province | Prefixes | Carriers |
|---|---|---|---|
| Toronto | ON | 17 | 1 |
| Montreal | QC | 7 | 1 |
| Ottawa-Hull | ON | 5 | 1 |
| Calgary | AB | 4 | 1 |
| Vancouver | BC | 3 | 1 |
| Amos | QC | 2 | 1 |
| Arundel | QC | 2 | 1 |
| Aylmer | QC | 2 | 1 |
| Berthierville | QC | 2 | 1 |
| Caledonia | NS | 2 | 1 |
| Carleton Place | ON | 2 | 1 |
| Chibougamau | QC | 2 | 1 |
| Collingwood | NS | 2 | 1 |
| Crabtree | QC | 2 | 1 |
| Cumberland | ON | 2 | 1 |
| Delisle | QC | 2 | 1 |
| Gatineau | QC | 2 | 1 |
| Gloucester | ON | 2 | 1 |
| Ile-Perrot | QC | 2 | 1 |
| Jockvale | ON | 2 | 1 |
| Kanata-Stittsville | ON | 2 | 1 |
| L'Annonciation | QC | 2 | 1 |
| L'Epiphanie-l'Assomption | QC | 2 | 1 |
| La Minerve | QC | 2 | 1 |
| La Sarre | QC | 2 | 1 |
| Labelle | QC | 2 | 1 |
| Lachine | QC | 2 | 1 |
| Lanoraie | QC | 2 | 1 |
| Le Gardeur | QC | 2 | 1 |
| Lebel-sur-Quevillon | QC | 2 | 1 |
| Nominingue | QC | 2 | 1 |
| Orleans | ON | 2 | 1 |
| Osgoode | ON | 2 | 1 |
| Pointe-Claire | QC | 2 | 1 |
| Quebec | QC | 2 | 1 |
| Rawdon | QC | 2 | 1 |
| Richmond | BC | 2 | 1 |
| Rouyn-Noranda | QC | 2 | 1 |
| Roxboro | QC | 2 | 1 |
| St-Adolphe-D'Howard | QC | 2 | 1 |
How the allocation was built up
| Period | Prefixes | Carriers |
|---|---|---|
| 2000–2004 | 2 | 1 |
| 2005–2009 | 136 | 1 |
| 2010–2014 | 117 | 1 |
| 2015–2019 | 64 | 1 |
| 2020–2024 | 482 | 1 |
| 2025–2029 | 7 | 1 |
1 undated in the register.
Allocated prefixes
Showing 82 of 809 prefixes, largest rate centres first.
Toronto, ON
416-548 · 647-476 · 647-477 · 647-478 · 647-479 · 647-483 · 647-600 · 647-601 · 647-742 · 647-743 · 647-744 · 647-812 · 647-813
Montreal, QC
438-476 · 438-477 · 438-478 · 438-479 · 514-312 · 514-316 · 514-360
Ottawa-Hull, ON
613-454 · 613-515 · 613-518 · 819-484 · 819-914
Calgary, AB
403-744 · 587-885 · 587-901 · 587-902
Vancouver, BC
778-812 · 778-813 · 778-819
Amos, QC
819-954 · 873-473
Arundel, QC
873-275 · 873-481
Aylmer, QC
819-486 · 819-915
Berthierville, QC
579-263 · 579-472
Caledonia, NS
365-859 · 782-301
Carleton Place, ON
613-456 · 613-508
Chibougamau, QC
581-430 · 581-479
Collingwood, NS
249-887 · 782-366
Crabtree, QC
579-264 · 579-471
Cumberland, ON
613-467 · 613-517
Delisle, QC
367-266 · 639-764
Gatineau, QC
819-485 · 819-916
Gloucester, ON
613-455 · 613-502
Ile-Perrot, QC
514-320 · 514-536
Jockvale, ON
613-459 · 613-512
Kanata-Stittsville, ON
613-457 · 613-509
L'Annonciation, QC
873-283 · 873-483
L'Epiphanie-l'Assomption, QC
579-262 · 579-475
La Minerve, QC
873-274 · 873-482
La Sarre, QC
819-940 · 873-474
Labelle, QC
873-284 · 873-480
Lachine, QC
514-307 · 514-532
Lanoraie, QC
579-261 · 579-470
Le Gardeur, QC
579-259 · 579-474
Lebel-sur-Quevillon, QC
819-925 · 873-471
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.