Phone numbers in Monmouth Junction, New Jersey
Monmouth Junction has 21 phone prefixes in area codes 732, 848.
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 29%
- Local phone company 19%
- Internet / business phone carrier 43%
- Phone company 10%
Every prefix in Monmouth Junction
Search the first six digits of a number in this list. If it's here, the number started in Monmouth Junction with the carrier shown. If it isn't, check the New Jersey page or look the number up.
| Prefix | Carrier | Type | Assigned |
|---|---|---|---|
| 732-230 | MCImetro (Verizon Business) | Internet / business phone carrier | – |
| 732-274 | Verizon (local phone) | Local phone company | – |
| 732-329 | Verizon (local phone) | Local phone company | – |
| 732-355 | Verizon (local phone) | Local phone company | – |
| 732-392 | Teleport Communications America | Internet / business phone carrier | – |
| 732-402 | Level 3 (Lumen) | Internet / business phone carrier | – |
| 732-438 | Verizon (local phone) | Local phone company | – |
| 732-647 | MCImetro (Verizon Business) | Internet / business phone carrier | – |
| 732-666 | AT&T Mobility | Mobile carrier | 2001 |
| 732-783 | Level 3 (Lumen) | Internet / business phone carrier | – |
| 732-822 | T-Mobile (including Sprint) | Mobile carrier | 2001 |
| 732-823 | Level 3 (Lumen) | Internet / business phone carrier | – |
| 732-829 | T-Mobile (including Sprint) | Mobile carrier | – |
| 732-880 | Onvoy | Internet / business phone carrier | 2024 |
| 732-997 | Monmouth Telephone And Telegraph | Phone company | 2001 |
| 848-213 | Block Line Systems | Phone company | 2012 |
| 848-278 | T-Mobile (including Sprint) | Mobile carrier | 2019 |
| 848-363 | TON80 Communications | Internet / business phone carrier | 2022 |
| 848-427 | AT&T Mobility | Mobile carrier | 2026 |
| 848-667 | T-Mobile (including Sprint) | Mobile carrier | 2002 |
| 848-748 | 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.