Phone numbers in Monticello, New York
Monticello has 23 phone prefixes in area codes 329, 845, 914.
Biggest holders: Verizon Wireless, T-Mobile (including Sprint), Verizon (local phone). This is the local calling area (rate center) where those prefixes were first assigned.
- Mobile carrier 70%
- Local phone company 13%
- Internet / business phone carrier 9%
- Phone company 9%
Every prefix in Monticello
Search the first six digits of a number in this list. If it's here, the number started in Monticello with the carrier shown. If it isn't, check the New York page or look the number up.
| Prefix | Carrier | Type | Assigned |
|---|---|---|---|
| 329-237 | Verizon Wireless | Mobile carrier | 2025 |
| 329-360 | Barr Tell USA | Phone company | 2026 |
| 845-397 | Tc Systems | Phone company | 2009 |
| 845-423 | Verizon Wireless | Mobile carrier | 2007 |
| 845-428 | Verizon Wireless | Mobile carrier | 2008 |
| 845-513 | Windstream (PAETEC) | Internet / business phone carrier | – |
| 845-631 | Windstream (PAETEC) | Internet / business phone carrier | 2021 |
| 845-665 | T-Mobile (including Sprint) | Mobile carrier | 2002 |
| 845-701 | Verizon Wireless | Mobile carrier | 2004 |
| 845-707 | MetroPCS (T-Mobile) | Mobile carrier | 2004 |
| 845-720 | Verizon Wireless | Mobile carrier | 2015 |
| 845-791 | Verizon (local phone) | Local phone company | – |
| 845-794 | Verizon (local phone) | Local phone company | – |
| 845-796 | Verizon (local phone) | Local phone company | – |
| 845-798 | AT&T Mobility | Mobile carrier | 2003 |
| 845-807 | Verizon Wireless | Mobile carrier | – |
| 845-861 | T-Mobile (including Sprint) | Mobile carrier | 2021 |
| 845-866 | AT&T Mobility | Mobile carrier | 2003 |
| 845-898 | AT&T Mobility | Mobile carrier | 2021 |
| 845-903 | T-Mobile (including Sprint) | Mobile carrier | 2021 |
| 914-797 | Verizon Wireless | Mobile carrier | – |
| 914-799 | Verizon Wireless | Mobile carrier | – |
| 914-866 | Verizon Wireless | Mobile carrier | – |
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.