Phone numbers in New Milford, Connecticut
New Milford has 12 phone prefixes in area code 860.
Biggest holders: AT&T (local phone), Verizon Wireless, Windstream (PAETEC). This is the local calling area (rate center) where those prefixes were first assigned.
- Mobile carrier 17%
- Local phone company 50%
- Internet / business phone carrier 33%
Every prefix in New Milford
Search the first six digits of a number in this list. If it's here, the number started in New Milford with the carrier shown. If it isn't, check the Connecticut page or look the number up.
| Prefix | Carrier | Type | Assigned |
|---|---|---|---|
| 860-210 | AT&T (local phone) | Local phone company | – |
| 860-350 | AT&T (local phone) | Local phone company | – |
| 860-354 | AT&T (local phone) | Local phone company | – |
| 860-355 | AT&T (local phone) | Local phone company | – |
| 860-488 | Verizon Wireless | Mobile carrier | – |
| 860-717 | Teleport Communications America | Internet / business phone carrier | 2010 |
| 860-750 | AT&T (local phone) | Local phone company | 2014 |
| 860-799 | Level 3 (Lumen) | Internet / business phone carrier | – |
| 860-898 | Verizon Wireless | Mobile carrier | 2005 |
| 860-915 | Windstream (PAETEC) | Internet / business phone carrier | – |
| 860-946 | Windstream (PAETEC) | Internet / business phone carrier | – |
| 860-957 | AT&T (local phone) | Local phone company | – |
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.