Phone numbers in Windham, New York
Windham has 4 phone prefixes in area codes 518, 838.
Biggest holders: Verizon (local phone), Firstlight Fiber, Coretel New York. This is the local calling area (rate center) where those prefixes were first assigned.
- Local phone company 25%
- Internet / business phone carrier 50%
- Phone company 25%
Every prefix in Windham
Search the first six digits of a number in this list. If it's here, the number started in Windham with the carrier shown. If it isn't, check the New York page or look the number up.
| Prefix | Carrier | Type | Assigned |
|---|---|---|---|
| 518-734 | Verizon (local phone) | Local phone company | – |
| 518-750 | Firstlight Fiber | Internet / business phone carrier | – |
| 838-228 | Coretel New York | Phone company | 2019 |
| 838-264 | Onvoy | 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.