FORREST — IL
Data last updated: March 10, 2026
Area Codes
Top Carriers
| Carrier | OCN | NXX Count |
|---|---|---|
| TERRA NOVA TELECOM INC. | 145J | 1 |
| TWILIO INTERNATIONAL, INC. | 506J | 1 |
| IP HORIZON LLC | 515J | 1 |
| AT&T ENTERPRISES, LLC | 516C | 1 |
| ILLINOIS BELL TEL CO | 9329 | 1 |
Data last updated: March 10, 2026
| Carrier | OCN | NXX Count |
|---|---|---|
| TERRA NOVA TELECOM INC. | 145J | 1 |
| TWILIO INTERNATIONAL, INC. | 506J | 1 |
| IP HORIZON LLC | 515J | 1 |
| AT&T ENTERPRISES, LLC | 516C | 1 |
| ILLINOIS BELL TEL CO | 9329 | 1 |