Phone numbers in Watertown, Connecticut
Watertown has 9 phone prefixes in area codes 860, 959.
Biggest holders: AT&T (local phone), Teleport Communications America, Verizon Wireless. This is the local calling area (rate center) where those prefixes were first assigned.
- Mobile carrier 11%
- Local phone company 22%
- Internet / business phone carrier 67%
Every prefix in Watertown
Search the first six digits of a number in this list. If it's here, the number started in Watertown with the carrier shown. If it isn't, check the Connecticut page or look the number up.
| Prefix | Carrier | Type | Assigned |
|---|---|---|---|
| 860-274 | AT&T (local phone) | Local phone company | – |
| 860-417 | Teleport Communications America | Internet / business phone carrier | – |
| 860-483 | Verizon Wireless | Mobile carrier | – |
| 860-590 | Onvoy | Internet / business phone carrier | – |
| 860-631 | Windstream (PAETEC) | Internet / business phone carrier | – |
| 860-945 | AT&T (local phone) | Local phone company | – |
| 860-981 | Comcast | Internet / business phone carrier | 2023 |
| 959-209 | Csc Voice | Internet / business phone carrier | 2016 |
| 959-465 | 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.