LA GRANGE — IL
Data last updated: March 10, 2026
Area Codes
Top Carriers
| Carrier | OCN | NXX Count |
|---|---|---|
| T-MOBILE USA, INC. | 6529 | 74 |
| CELLCO PARTNERSHIP DBA VERIZON WIRELESS - IL | 6333 | 68 |
| NEW CINGULAR WIRELESS PCS, LLC - IL | 6534 | 42 |
| SPOK, INC. | 6630 | 23 |
| AMERICAN MESSAGING SERVICES, LLC | 9748 | 17 |