Phone numbers in Sherwood, Wisconsin
Sherwood has 3 phone prefixes in area code 920.
Biggest holders: Charter / Spectrum, Onvoy, Stockbridge & Sherwood Tel. This is the local calling area (rate center) where those prefixes were first assigned.
- Internet / business phone carrier 67%
- Phone company 33%
Every prefix in Sherwood
Search the first six digits of a number in this list. If it's here, the number started in Sherwood with the carrier shown. If it isn't, check the Wisconsin page or look the number up.
| Prefix | Carrier | Type | Assigned |
|---|---|---|---|
| 920-507 | Charter / Spectrum | Internet / business phone carrier | 2006 |
| 920-800 | Onvoy | Internet / business phone carrier | – |
| 920-989 | Stockbridge & Sherwood Tel | 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.