GT Group Telecom Services Corp.
GT Group Telecom Services Corp. holds 26 in-service central-office prefixes in the CNAC register, covering roughly 260,000 telephone numbers. They span 6 area codes and 7 rate centres across 3 provinces and territories, concentrated in BC. Its earliest recorded assignment dates to 1999, its most recent to 2008.
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
- 26
- Telephone numbers covered
- 260,000
- Carriers
- 1
- Rate centres
- 7
- Area codes
- 6
- Provinces and territories
- 3
- First assignment
- September 2, 1999
- Most recent assignment
- June 26, 2008
Provinces and territories
| Province | Prefixes | Rate centres |
|---|---|---|
| British Columbia | 15 | 4 |
| Alberta | 8 | 2 |
| Manitoba | 3 | 1 |
Area codes
Where these numbers land
| Rate centre | Province | Prefixes | Carriers |
|---|---|---|---|
| Vancouver | BC | 7 | 1 |
| Calgary | AB | 5 | 1 |
| Edmonton | AB | 3 | 1 |
| Richmond | BC | 3 | 1 |
| Victoria | BC | 3 | 1 |
| Winnipeg | MB | 3 | 1 |
| New Westminster | BC | 2 | 1 |
How the allocation was built up
| Period | Prefixes | Carriers |
|---|---|---|
| 1995–1999 | 5 | 1 |
| 2000–2004 | 3 | 1 |
| 2005–2009 | 16 | 1 |
2 undated in the register.
Allocated prefixes
All 26 in-service prefixes, grouped by rate centre.
Vancouver, BC
604-235 · 604-484 · 604-628 · 778-782 · 778-783 · 778-785 · 778-786
Calgary, AB
403-668 · 403-770 · 403-774 · 403-775 · 403-776
Edmonton, AB
780-628 · 780-669 · 780-670
Richmond, BC
604-234 · 604-288 · 778-282
Victoria, BC
250-483 · 250-984 · 778-224
Winnipeg, MB
204-272 · 204-318 · 204-480
New Westminster, BC
604-237 · 604-357
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.