Phone numbers in Williamsburg, Iowa
Williamsburg has 4 phone prefixes in area code 319.
Biggest holders: Verizon Wireless, Windstream Iowa Communications, Inc. - North. This is the local calling area (rate center) where those prefixes were first assigned.
- Mobile carrier 50%
- Local phone company 50%
Every prefix in Williamsburg
Search the first six digits of a number in this list. If it's here, the number started in Williamsburg with the carrier shown. If it isn't, check the Iowa page or look the number up.
| Prefix | Carrier | Type | Assigned |
|---|---|---|---|
| 319-660 | Verizon Wireless | Mobile carrier | – |
| 319-661 | Verizon Wireless | Mobile carrier | – |
| 319-668 | Windstream Iowa Communications, Inc. - North | Local phone company | – |
| 319-722 | Windstream Iowa Communications, Inc. - North | Local phone company | 2015 |
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.