Phone numbers in Hawarden, Iowa
Hawarden has 4 phone prefixes in area code 712.
Biggest holders: Verizon Wireless, AT&T Mobility, Hawarden Municipal Utilities. This is the local calling area (rate center) where those prefixes were first assigned.
- Mobile carrier 50%
- Phone company 50%
Every prefix in Hawarden
Search the first six digits of a number in this list. If it's here, the number started in Hawarden with the carrier shown. If it isn't, check the Iowa page or look the number up.
| Prefix | Carrier | Type | Assigned |
|---|---|---|---|
| 712-422 | Verizon Wireless | Mobile carrier | 2013 |
| 712-550 | AT&T Mobility | Mobile carrier | 2006 |
| 712-551 | Hawarden Municipal Utilities | Phone company | – |
| 712-552 | Premier Communications | 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.