Phone numbers in Watertown, New York
Watertown has 39 phone prefixes in area codes 315, 680.
Biggest holders: Verizon Wireless, Verizon (local phone), Windstream (PAETEC). This is the local calling area (rate center) where those prefixes were first assigned.
- Mobile carrier 38%
- Local phone company 21%
- Internet / business phone carrier 21%
- Phone company 21%
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 New York page or look the number up.
| Prefix | Carrier | Type | Assigned |
|---|---|---|---|
| 315-221 | Tc Systems | Phone company | – |
| 315-222 | Windstream (PAETEC) | Internet / business phone carrier | – |
| 315-286 | AT&T Mobility | Mobile carrier | – |
| 315-321 | Contact Communications | Phone company | 2003 |
| 315-405 | Verizon Wireless | Mobile carrier | – |
| 315-408 | Verizon Wireless | Mobile carrier | – |
| 315-486 | AT&T Mobility | Mobile carrier | – |
| 315-489 | T-Mobile (including Sprint) | Mobile carrier | – |
| 315-523 | T-Mobile (including Sprint) | Mobile carrier | – |
| 315-586 | Verizon Wireless | Mobile carrier | – |
| 315-608 | Northland Networks | Phone company | – |
| 315-661 | Windstream (PAETEC) | Internet / business phone carrier | – |
| 315-681 | Level 3 (Lumen) | Internet / business phone carrier | – |
| 315-755 | Westelcom Network | Phone company | 2003 |
| 315-767 | Verizon Wireless | Mobile carrier | – |
| 315-771 | AT&T Mobility | Mobile carrier | – |
| 315-772 | Tc Systems | Phone company | – |
| 315-773 | Verizon (local phone) | Local phone company | – |
| 315-774 | Tc Systems | Phone company | – |
| 315-775 | Verizon (local phone) | Local phone company | – |
| 315-777 | Westelcom Network | Phone company | 2006 |
| 315-778 | Verizon Wireless | Mobile carrier | – |
| 315-779 | Verizon (local phone) | Local phone company | – |
| 315-782 | Verizon (local phone) | Local phone company | – |
| 315-783 | Verizon Wireless | Mobile carrier | – |
| 315-785 | Verizon (local phone) | Local phone company | – |
| 315-786 | Verizon (local phone) | Local phone company | – |
| 315-788 | Verizon (local phone) | Local phone company | – |
| 315-804 | Level 3 (Lumen) | Internet / business phone carrier | 2006 |
| 315-816 | Verizon Wireless | Mobile carrier | 2011 |
| 315-836 | Windstream (PAETEC) | Internet / business phone carrier | – |
| 315-844 | Contact Communications | Phone company | – |
| 315-921 | T-Mobile (including Sprint) | Mobile carrier | – |
| 315-955 | Windstream (PAETEC) | Internet / business phone carrier | – |
| 315-965 | CenturyLink / Lumen | Local phone company | 2014 |
| 680-210 | Verizon Wireless | Mobile carrier | 2018 |
| 680-222 | Onvoy | Internet / business phone carrier | – |
| 680-291 | Verizon Wireless | Mobile carrier | 2023 |
| 680-336 | Fractel | Internet / business phone carrier | 2020 |
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.