Area code 879
Area code 879 holds 3 in-service central-office prefixes in the CNAC register, covering roughly 30,000 telephone numbers. They are split between 3 carriers and 2 rate centres. The largest is Corner Brook. Recorded assignments run from January 10, 2024 to June 2, 2025. That ranks it 55 of 55 Canadian area codes by prefix count.
Background reading: Caller ID spoofing, STIR/SHAKEN, and how to actually block calls in Canada · Canadian area codes, overlays, and what a 416 number actually tells you · One-ring scams and the Caribbean area codes that look Canadian
In numbers
- In-service prefixes
- 3
- Telephone numbers covered
- 30,000
- Carriers
- 3
- Rate centres
- 2
- Provinces and territories
- 1
- First assignment
- January 10, 2024
- Most recent assignment
- June 2, 2025
Who holds these numbers
Bell Mobility Aliant holds the largest share at 1 prefixes, 33.3% of the total, ahead of 2 other carriers.
| Carrier | Prefixes | Share | First assigned |
|---|---|---|---|
| Bell Mobility Aliant | 1 | 33.3 % | 2024 |
| Fido Solutions Inc. | 1 | 33.3 % | 2025 |
| Rogers Communications Canada Inc. (Wireless) | 1 | 33.3 % | 2025 |
Where these numbers land
Prefixes in 879 serve 2 rate centres. A rate centre is the billing area a prefix is attached to, not where the handset is.
| Rate centre | Province | Prefixes | Carriers |
|---|---|---|---|
| Corner Brook | NL | 2 | 2 |
| St. John's | NL | 1 | 1 |
How the allocation was built up
| Period | Prefixes | Carriers |
|---|---|---|
| 2020–2024 | 1 | 1 |
| 2025–2029 | 2 | 2 |
Overlay area codes
879 shares its rate centres with 709. Overlay codes cover the same ground, which is why ten-digit dialling is required: two neighbours on one street can hold different area codes.
Allocated prefixes
All 3 in-service prefixes, grouped by rate centre.
Corner Brook, NL
879-881 · 879-888
St. John's, NL
879-382
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.