Phone numbers in Sheboygan, Wisconsin
Sheboygan has 34 phone prefixes in area codes 274, 920.
Biggest holders: AT&T (local phone), AT&T Mobility, UScellular. This is the local calling area (rate center) where those prefixes were first assigned.
- Mobile carrier 44%
- Local phone company 26%
- Internet / business phone carrier 15%
- Paging service 9%
- Phone company 6%
Every prefix in Sheboygan
Search the first six digits of a number in this list. If it's here, the number started in Sheboygan with the carrier shown. If it isn't, check the Wisconsin page or look the number up.
| Prefix | Carrier | Type | Assigned |
|---|---|---|---|
| 274-228 | AT&T Mobility | Mobile carrier | 2025 |
| 920-207 | UScellular | Mobile carrier | – |
| 920-208 | AT&T (local phone) | Local phone company | – |
| 920-226 | AT&T Mobility | Mobile carrier | – |
| 920-254 | MetroPCS (T-Mobile) | Mobile carrier | – |
| 920-287 | Level 3 (Lumen) | Internet / business phone carrier | – |
| 920-331 | MetroPCS (T-Mobile) | Mobile carrier | – |
| 920-334 | Cellcom | Phone company | – |
| 920-377 | MetroPCS (T-Mobile) | Mobile carrier | – |
| 920-395 | AT&T (local phone) | Local phone company | 2001 |
| 920-451 | AT&T (local phone) | Local phone company | – |
| 920-452 | AT&T (local phone) | Local phone company | – |
| 920-453 | AT&T (local phone) | Local phone company | – |
| 920-457 | AT&T (local phone) | Local phone company | – |
| 920-458 | AT&T (local phone) | Local phone company | – |
| 920-459 | AT&T (local phone) | Local phone company | – |
| 920-476 | Level 3 (Lumen) | Internet / business phone carrier | – |
| 920-547 | Level 3 (Lumen) | Internet / business phone carrier | 2002 |
| 920-576 | American Messaging Services | Paging service | – |
| 920-577 | American Messaging Services | Paging service | – |
| 920-627 | UScellular | Mobile carrier | – |
| 920-694 | Windstream (PAETEC) | Internet / business phone carrier | – |
| 920-698 | AT&T Mobility | Mobile carrier | 2001 |
| 920-783 | Windstream (PAETEC) | Internet / business phone carrier | 2001 |
| 920-803 | AT&T (local phone) | Local phone company | – |
| 920-814 | TDS Metrocom | Phone company | 2023 |
| 920-889 | Verizon Wireless | Mobile carrier | – |
| 920-912 | AT&T Mobility | Mobile carrier | – |
| 920-917 | AT&T Mobility | Mobile carrier | – |
| 920-918 | AT&T Mobility | Mobile carrier | – |
| 920-919 | American Messaging Services | Paging service | – |
| 920-943 | AT&T Mobility | Mobile carrier | 2023 |
| 920-946 | UScellular | Mobile carrier | – |
| 920-980 | UScellular | Mobile carrier | – |
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.