Phone numbers in Hillsdale, New York
Hillsdale has 4 phone prefixes in area codes 518, 838.
Biggest holders: Taconic Tel, Integrated Path Communications, Fractel. This is the local calling area (rate center) where those prefixes were first assigned.
- Internet / business phone carrier 25%
- Phone company 75%
Every prefix in Hillsdale
Search the first six digits of a number in this list. If it's here, the number started in Hillsdale with the carrier shown. If it isn't, check the New York page or look the number up.
| Prefix | Carrier | Type | Assigned |
|---|---|---|---|
| 518-325 | Taconic Tel | Phone company | – |
| 518-988 | Integrated Path Communications | Phone company | 2015 |
| 838-299 | Fractel | Internet / business phone carrier | 2021 |
| 838-828 | Greenway Communications | Phone company | 2026 |
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.