Phone numbers in Grundy Center, Iowa
Grundy Center has 5 phone prefixes in area code 319.
Biggest holders: Windstream Iowa Communications, Inc. - Systems, Heart Of Iowa Ventures, Verizon Wireless. This is the local calling area (rate center) where those prefixes were first assigned.
- Mobile carrier 20%
- Local phone company 40%
- Phone company 40%
Every prefix in Grundy Center
Search the first six digits of a number in this list. If it's here, the number started in Grundy Center with the carrier shown. If it isn't, check the Iowa page or look the number up.
| Prefix | Carrier | Type | Assigned |
|---|---|---|---|
| 319-245 | Windstream Iowa Communications, Inc. - Systems | Local phone company | 2015 |
| 319-418 | Heart Of Iowa Ventures | Phone company | 2025 |
| 319-823 | Verizon Wireless | Mobile carrier | 2003 |
| 319-824 | Windstream Iowa Communications, Inc. - Systems | Local phone company | – |
| 319-825 | Aureon 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.