Phone numbers in Highlandml, New York
Highlandml has 5 phone prefixes in area codes 329, 845.
Biggest holders: Csc Voice, Frontier, Onvoy. This is the local calling area (rate center) where those prefixes were first assigned.
- Local phone company 40%
- Internet / business phone carrier 60%
Every prefix in Highlandml
Search the first six digits of a number in this list. If it's here, the number started in Highlandml with the carrier shown. If it isn't, check the New York page or look the number up.
| Prefix | Carrier | Type | Assigned |
|---|---|---|---|
| 329-230 | Onvoy | Internet / business phone carrier | 2024 |
| 845-273 | Csc Voice | Internet / business phone carrier | 2015 |
| 845-460 | Frontier | Local phone company | 2001 |
| 845-827 | Csc Voice | Internet / business phone carrier | 2004 |
| 845-928 | Frontier | Local phone company | – |
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.