SIOUX FLS — SD
Data last updated: March 10, 2026
Area Codes
Top Carriers
| Carrier | OCN | NXX Count |
|---|---|---|
| QWEST CORPORATION | 9631 | 29 |
| CELLCO PARTNERSHIP DBA VERIZON WIRELESS - SD | 6569 | 9 |
| NEW CINGULAR WIRELESS PCS, LLC - IL | 6534 | 8 |
| AERIAL COMMUNICATIONS, INC. | 6701 | 5 |
| ONVOY, LLC - SD | 162G | 4 |