PLAINFIELD — IL
Data last updated: March 10, 2026
Area Codes
Top Carriers
| Carrier | OCN | NXX Count |
|---|---|---|
| ILLINOIS BELL TEL CO | 9329 | 6 |
| LEVEL 3 COMMUNICATIONS, LLC - IL | 6115 | 5 |
| T-MOBILE USA, INC. | 6529 | 2 |
| BANDWIDTH.COM CLEC, LLC - IL | 984E | 2 |
| TELNYX LLC | 073H | 1 |
Data last updated: March 10, 2026
| Carrier | OCN | NXX Count |
|---|---|---|
| ILLINOIS BELL TEL CO | 9329 | 6 |
| LEVEL 3 COMMUNICATIONS, LLC - IL | 6115 | 5 |
| T-MOBILE USA, INC. | 6529 | 2 |
| BANDWIDTH.COM CLEC, LLC - IL | 984E | 2 |
| TELNYX LLC | 073H | 1 |