E CHICAGO — IN
Data last updated: March 10, 2026
Area Codes
Top Carriers
| Carrier | OCN | NXX Count |
|---|---|---|
| T-MOBILE USA, INC. | 6529 | 10 |
| INDIANA BELL TEL CO INC | 9325 | 7 |
| ONVOY, LLC - IN | 097D | 1 |
| BANDWIDTH.COM CLEC, LLC - IN | 105F | 1 |
| FIRST COMMUNICATIONS, LLC | 460K | 1 |
Data last updated: March 10, 2026
| Carrier | OCN | NXX Count |
|---|---|---|
| T-MOBILE USA, INC. | 6529 | 10 |
| INDIANA BELL TEL CO INC | 9325 | 7 |
| ONVOY, LLC - IN | 097D | 1 |
| BANDWIDTH.COM CLEC, LLC - IN | 105F | 1 |
| FIRST COMMUNICATIONS, LLC | 460K | 1 |