Phone numbers in Northport, New York
Northport has 14 phone prefixes in area codes 631, 934.
Biggest holders: Verizon (local phone), Csc Voice, MCImetro (Verizon Business). This is the local calling area (rate center) where those prefixes were first assigned.
- Mobile carrier 7%
- Local phone company 36%
- Internet / business phone carrier 50%
- Phone company 7%
Every prefix in Northport
Search the first six digits of a number in this list. If it's here, the number started in Northport with the carrier shown. If it isn't, check the New York page or look the number up.
| Prefix | Carrier | Type | Assigned |
|---|---|---|---|
| 631-239 | Tc Systems | Phone company | – |
| 631-261 | Verizon (local phone) | Local phone company | – |
| 631-262 | Verizon (local phone) | Local phone company | – |
| 631-606 | Csc Voice | Internet / business phone carrier | 2009 |
| 631-628 | MCImetro (Verizon Business) | Internet / business phone carrier | – |
| 631-651 | Csc Voice | Internet / business phone carrier | – |
| 631-754 | Verizon (local phone) | Local phone company | – |
| 631-757 | Verizon (local phone) | Local phone company | – |
| 631-837 | MCImetro (Verizon Business) | Internet / business phone carrier | – |
| 631-896 | MetroPCS (T-Mobile) | Mobile carrier | 2002 |
| 631-912 | Verizon (local phone) | Local phone company | – |
| 631-925 | Level 3 (Lumen) | Internet / business phone carrier | – |
| 934-470 | Cablevision Lightpath | Internet / business phone carrier | 2017 |
| 934-786 | Fractel | 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.