Phone numbers in Clinton, Connecticut
Clinton has 7 phone prefixes in area codes 860, 959.
Biggest holders: AT&T (local phone), Level 3 (Lumen), Peerless Network Of Connecticut. This is the local calling area (rate center) where those prefixes were first assigned.
- Local phone company 29%
- Internet / business phone carrier 57%
- Phone company 14%
Every prefix in Clinton
Search the first six digits of a number in this list. If it's here, the number started in Clinton with the carrier shown. If it isn't, check the Connecticut page or look the number up.
| Prefix | Carrier | Type | Assigned |
|---|---|---|---|
| 860-552 | Level 3 (Lumen) | Internet / business phone carrier | – |
| 860-664 | AT&T (local phone) | Local phone company | – |
| 860-669 | AT&T (local phone) | Local phone company | – |
| 860-744 | Peerless Network Of Connecticut | Internet / business phone carrier | 2013 |
| 959-272 | Eon Telecom | Phone company | 2024 |
| 959-625 | TON80 Communications | Internet / business phone carrier | 2022 |
| 959-991 | Onvoy | 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.