Managed Network Systems Inc.
Managed Network Systems Inc. holds 12 in-service central-office prefixes in the CNAC register, covering roughly 120,000 telephone numbers. They span 4 area codes and 12 rate centres across 1 province, concentrated in ON. Its earliest recorded assignment dates to 2000, its most recent to 2019.
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
- 12
- Telephone numbers covered
- 120,000
- Carriers
- 1
- Rate centres
- 12
- Area codes
- 4
- Provinces and territories
- 1
- First assignment
- January 31, 2000
- Most recent assignment
- January 7, 2019
Provinces and territories
| Province | Prefixes | Rate centres |
|---|---|---|
| Ontario | 12 | 12 |
Area codes
Where these numbers land
| Rate centre | Province | Prefixes | Carriers |
|---|---|---|---|
| Belle River | ON | 1 | 1 |
| Burlington | ON | 1 | 1 |
| Chatham | ON | 1 | 1 |
| Emeryville | ON | 1 | 1 |
| Hamilton | ON | 1 | 1 |
| Kitchener-Waterloo | ON | 1 | 1 |
| La Salle | ON | 1 | 1 |
| London | ON | 1 | 1 |
| Sarnia | ON | 1 | 1 |
| Tecumseh | ON | 1 | 1 |
| Toronto | ON | 1 | 1 |
| Windsor | ON | 1 | 1 |
How the allocation was built up
| Period | Prefixes | Carriers |
|---|---|---|
| 2000–2004 | 1 | 1 |
| 2005–2009 | 1 | 1 |
| 2010–2014 | 8 | 1 |
| 2015–2019 | 2 | 1 |
Allocated prefixes
All 12 in-service prefixes, grouped by rate centre.
Belle River, ON
226-684
Burlington, ON
289-977
Chatham, ON
226-671
Emeryville, ON
226-683
Hamilton, ON
289-978
Kitchener-Waterloo, ON
226-673
La Salle, ON
226-675
London, ON
519-789
Sarnia, ON
226-672
Tecumseh, ON
226-676
Toronto, ON
647-796
Windsor, ON
226-674
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.