Phone numbers in Hartford, Wisconsin
Hartford has 11 phone prefixes in area code 262.
Biggest holders: Level 3 (Lumen), AT&T (local phone), Charter / Spectrum. This is the local calling area (rate center) where those prefixes were first assigned.
- Mobile carrier 9%
- Local phone company 18%
- Internet / business phone carrier 64%
- Paging service 9%
Every prefix in Hartford
Search the first six digits of a number in this list. If it's here, the number started in Hartford with the carrier shown. If it isn't, check the Wisconsin page or look the number up.
| Prefix | Carrier | Type | Assigned |
|---|---|---|---|
| 262-216 | Charter / Spectrum | Internet / business phone carrier | 2018 |
| 262-223 | Windstream (PAETEC) | Internet / business phone carrier | – |
| 262-224 | UScellular | Mobile carrier | – |
| 262-276 | Bandwidth | Internet / business phone carrier | 2021 |
| 262-397 | Level 3 (Lumen) | Internet / business phone carrier | – |
| 262-430 | Onvoy | Internet / business phone carrier | 2024 |
| 262-457 | Level 3 (Lumen) | Internet / business phone carrier | – |
| 262-670 | AT&T (local phone) | Local phone company | – |
| 262-673 | AT&T (local phone) | Local phone company | – |
| 262-709 | Teleport Communications America, LLC Wi | Internet / business phone carrier | – |
| 262-841 | American Messaging Services | Paging service | – |
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.