Phone numbers in Amagansett, New York
Amagansett has 6 phone prefixes in area codes 631, 934.
Biggest holders: Onvoy, Verizon (local phone), MCImetro (Verizon Business). This is the local calling area (rate center) where those prefixes were first assigned.
- Local phone company 17%
- Internet / business phone carrier 83%
Every prefix in Amagansett
Search the first six digits of a number in this list. If it's here, the number started in Amagansett with the carrier shown. If it isn't, check the New York page or look the number up.
| Prefix | Carrier | Type | Assigned |
|---|---|---|---|
| 631-267 | Verizon (local phone) | Local phone company | – |
| 631-318 | MCImetro (Verizon Business) | Internet / business phone carrier | 2010 |
| 631-557 | Onvoy | Internet / business phone carrier | – |
| 631-731 | Level 3 (Lumen) | Internet / business phone carrier | – |
| 934-243 | Commio | Internet / business phone carrier | 2023 |
| 934-935 | 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.