WATERTOWN — SD
Data last updated: March 10, 2026
Area Codes
Top Carriers
| Carrier | OCN | NXX Count |
|---|---|---|
| CELLCO PARTNERSHIP DBA VERIZON WIRELESS - SD | 6569 | 4 |
| QWEST CORPORATION | 9631 | 3 |
| BANDWIDTH.COM CLEC, LLC - SD | 106F | 2 |
| NEW CINGULAR WIRELESS PCS, LLC - IL | 6534 | 2 |
| AERIAL COMMUNICATIONS, INC. | 6701 | 2 |