Phone numbers in Yaphank, New York
Yaphank has 22 phone prefixes in area codes 631, 934.
Biggest holders: Verizon (local phone), T-Mobile (including Sprint), Level 3 (Lumen). This is the local calling area (rate center) where those prefixes were first assigned.
- Mobile carrier 36%
- Local phone company 27%
- Internet / business phone carrier 36%
Every prefix in Yaphank
Search the first six digits of a number in this list. If it's here, the number started in Yaphank with the carrier shown. If it isn't, check the New York page or look the number up.
| Prefix | Carrier | Type | Assigned |
|---|---|---|---|
| 631-205 | Verizon (local phone) | Local phone company | – |
| 631-282 | Verizon (local phone) | Local phone company | – |
| 631-294 | T-Mobile (including Sprint) | Mobile carrier | 2002 |
| 631-295 | Level 3 (Lumen) | Internet / business phone carrier | – |
| 631-341 | Verizon (local phone) | Local phone company | – |
| 631-344 | Verizon (local phone) | Local phone company | – |
| 631-345 | Verizon (local phone) | Local phone company | – |
| 631-394 | T-Mobile (including Sprint) | Mobile carrier | 2010 |
| 631-448 | T-Mobile (including Sprint) | Mobile carrier | 2011 |
| 631-504 | Csc Voice | Internet / business phone carrier | 2006 |
| 631-550 | Lte Wireless | Mobile carrier | 2020 |
| 631-578 | T-Mobile (including Sprint) | Mobile carrier | 2007 |
| 631-618 | Level 3 (Lumen) | Internet / business phone carrier | – |
| 631-775 | Cablevision Lightpath | Internet / business phone carrier | – |
| 631-816 | T-Mobile (including Sprint) | Mobile carrier | 2002 |
| 631-924 | Verizon (local phone) | Local phone company | – |
| 631-995 | MCImetro (Verizon Business) | Internet / business phone carrier | – |
| 934-226 | T-Mobile (including Sprint) | Mobile carrier | 2021 |
| 934-258 | Onvoy | Internet / business phone carrier | 2024 |
| 934-386 | Fractel | Internet / business phone carrier | 2021 |
| 934-800 | Evolve Cellular | Mobile carrier | 2016 |
| 934-852 | Cablevision Lightpath | Internet / business phone carrier | 2016 |
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.