Phone numbers in Ontario, New York
Ontario has 6 phone prefixes in area codes 315, 680.
Biggest holders: Verizon (local phone), Windstream (PAETEC), Bandwidth. This is the local calling area (rate center) where those prefixes were first assigned.
- Mobile carrier 17%
- Local phone company 33%
- Internet / business phone carrier 50%
Every prefix in Ontario
Search the first six digits of a number in this list. If it's here, the number started in Ontario with the carrier shown. If it isn't, check the New York page or look the number up.
| Prefix | Carrier | Type | Assigned |
|---|---|---|---|
| 315-333 | Windstream (PAETEC) | Internet / business phone carrier | 2002 |
| 315-524 | Verizon (local phone) | Local phone company | – |
| 315-791 | Verizon (local phone) | Local phone company | 2004 |
| 315-997 | Bandwidth | Internet / business phone carrier | 2018 |
| 680-229 | Boost / Virgin Mobile | Mobile carrier | 2021 |
| 680-899 | Fractel | Internet / business phone carrier | 2021 |
Most prefixes are pooled: the 10,000 numbers in each are handed out in blocks of 1,000 to different carriers, and people can also take their numbers to another carrier. So the carrier shown is where the prefix started, not a guarantee about any one number. Source: NANPA central office code records, 2026-10-10.