ALTA — UT
Data last updated: June 25, 2026
Area Codes
Top Carriers
| Carrier | OCN | NXX Count |
|---|---|---|
| BANDWIDTH.COM CLEC, LLC - UT | 117F | 3 |
| CELLCO PARTNERSHIP DBA VERIZON WIRELESS - UT | 6571 | 3 |
| LEVEL 3 COMMUNICATIONS, LLC - UT | 3231 | 1 |
| ONVOY, LLC - UT | 871E | 1 |
| QWEST CORPORATION | 9636 | 1 |