Phone numbers in Sauk City, Wisconsin
Sauk City has 5 phone prefixes in area code 608.
Biggest holders: Frontier, UScellular, MCImetro (Verizon Business). This is the local calling area (rate center) where those prefixes were first assigned.
- Mobile carrier 20%
- Local phone company 40%
- Internet / business phone carrier 40%
Every prefix in Sauk City
Search the first six digits of a number in this list. If it's here, the number started in Sauk City with the carrier shown. If it isn't, check the Wisconsin page or look the number up.
| Prefix | Carrier | Type | Assigned |
|---|---|---|---|
| 608-370 | UScellular | Mobile carrier | 2001 |
| 608-460 | MCImetro (Verizon Business) | Internet / business phone carrier | 2016 |
| 608-643 | Frontier | Local phone company | – |
| 608-644 | Frontier | Local phone company | – |
| 608-918 | Onvoy | Internet / business phone carrier | 2023 |
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.