GREENFIELD — IA
Data last updated: June 25, 2026
Area Codes
Top Carriers
| Carrier | OCN | NXX Count |
|---|---|---|
| WINDSTREAM IOWA COMMUNICATIONS, INC. - SYSTEMS | 1170 | 3 |
| UNITED STATES CELLULAR - IA | 6266 | 1 |
Data last updated: June 25, 2026
| Carrier | OCN | NXX Count |
|---|---|---|
| WINDSTREAM IOWA COMMUNICATIONS, INC. - SYSTEMS | 1170 | 3 |
| UNITED STATES CELLULAR - IA | 6266 | 1 |