GARY — IN
Data last updated: March 10, 2026
Area Codes
Top Carriers
| Carrier | OCN | NXX Count |
|---|---|---|
| T-MOBILE USA, INC. | 6529 | 20 |
| CELLCO PARTNERSHIP DBA VERIZON WIRELESS - IN | 6725 | 17 |
| INDIANA BELL TEL CO INC | 9325 | 17 |
| METROPCS, INC. | 5562 | 5 |
| NEW CINGULAR WIRELESS PCS, LLC - IL | 6534 | 5 |