ROCKVALLEY — IA
Data last updated: June 25, 2026
Area Codes
Top Carriers
| Carrier | OCN | NXX Count |
|---|---|---|
| NEW CINGULAR WIRELESS PCS, LLC - IL | 6534 | 2 |
| HEARTLAND TELECO OF IA DBA PREMIER COMMUNICATIONS | 1109 | 1 |
| CELLCO PARTNERSHIP DBA VERIZON WIRELESS - IA | 6570 | 1 |
| PREMIER COMMUNICATIONS, INC. - IA | 904D | 1 |