JEFFERSON — IA
Data last updated: June 25, 2026
Area Codes
Top Carriers
| Carrier | OCN | NXX Count |
|---|---|---|
| JEFFERSON TEL. CO. | 1212 | 1 |
| UNITED STATES CELLULAR - IA | 6266 | 1 |
| T-MOBILE USA, INC. | 6529 | 1 |
| CELLCO PARTNERSHIP DBA VERIZON WIRELESS - IA | 6570 | 1 |
Data last updated: June 25, 2026
| Carrier | OCN | NXX Count |
|---|---|---|
| JEFFERSON TEL. CO. | 1212 | 1 |
| UNITED STATES CELLULAR - IA | 6266 | 1 |
| T-MOBILE USA, INC. | 6529 | 1 |
| CELLCO PARTNERSHIP DBA VERIZON WIRELESS - IA | 6570 | 1 |