Phone numbers in Stony Brook, New York
Stony Brook has 17 phone prefixes in area codes 631, 934.
Biggest holders: Verizon (local phone), Windstream (PAETEC), American Network. This is the local calling area (rate center) where those prefixes were first assigned.
- Mobile carrier 6%
- Local phone company 47%
- Internet / business phone carrier 35%
- Phone company 12%
Every prefix in Stony Brook
Search the first six digits of a number in this list. If it's here, the number started in Stony Brook with the carrier shown. If it isn't, check the New York page or look the number up.
| Prefix | Carrier | Type | Assigned |
|---|---|---|---|
| 631-216 | Verizon (local phone) | Local phone company | – |
| 631-217 | American Network | Phone company | – |
| 631-246 | Verizon (local phone) | Local phone company | – |
| 631-364 | Windstream (PAETEC) | Internet / business phone carrier | 2010 |
| 631-371 | MetroPCS (T-Mobile) | Mobile carrier | 2002 |
| 631-380 | Tc Systems | Phone company | – |
| 631-444 | Verizon (local phone) | Local phone company | – |
| 631-632 | Verizon (local phone) | Local phone company | – |
| 631-638 | Verizon (local phone) | Local phone company | 2005 |
| 631-675 | Cablevision Lightpath | Internet / business phone carrier | – |
| 631-689 | Verizon (local phone) | Local phone company | – |
| 631-706 | MCImetro (Verizon Business) | Internet / business phone carrier | – |
| 631-751 | Verizon (local phone) | Local phone company | – |
| 631-762 | Level 3 (Lumen) | Internet / business phone carrier | – |
| 631-941 | Verizon (local phone) | Local phone company | – |
| 934-213 | Windstream (PAETEC) | Internet / business phone carrier | 2021 |
| 934-649 | TON80 Communications | Internet / business phone carrier | 2022 |
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.