GRANDFALLS — TX
Data last updated: June 25, 2026
Area Codes
Top Carriers
| Carrier | OCN | NXX Count |
|---|---|---|
| IP HORIZON LLC | 515J | 1 |
| LEVEL 3 COMMUNICATIONS, LLC - TX | 6114 | 1 |
| SOUTHWESTERN BELL | 9533 | 1 |
Data last updated: June 25, 2026
| Carrier | OCN | NXX Count |
|---|---|---|
| IP HORIZON LLC | 515J | 1 |
| LEVEL 3 COMMUNICATIONS, LLC - TX | 6114 | 1 |
| SOUTHWESTERN BELL | 9533 | 1 |