FRONTIER SOUTHWEST INC DBA FRONTIER COMM OF TEXAS
183 prefixes in 972 · initial assignments from the NANPA CO code file, 09/17/2026
| NPA-NXX | Rate center | OCN | Assigned | Pooled |
|---|---|---|---|---|
| 972-544 | FERRIS | 2154 | — | Yes |
| 972-550 | IRVING | 4344 | — | — |
| 972-554 | IRVING | 4344 | — | — |
| 972-570 | IRVING | 4344 | — | — |
| 972-574 | DLFTWTARPT | 4344 | — | — |
| 972-575 | PLANO | 4344 | — | — |
| 972-578 | PLANO | 4344 | — | — |
| 972-579 | IRVING | 4344 | — | — |
| 972-580 | IRVING | 4344 | — | — |
| 972-582 | IRVING | 4344 | — | — |
| 972-586 | DLFTWTARPT | 4344 | — | Yes |
| 972-594 | IRVING | 4344 | — | Yes |
| 972-596 | PLANO | 4344 | — | — |
| 972-599 | PLANO | 4344 | — | — |
| 972-604 | PLANO | 4344 | — | — |
| 972-605 | PLANO | 4344 | — | — |
| 972-607 | IRVING | 4344 | — | Yes |
| 972-608 | PLANO | 4344 | — | Yes |
| 972-612 | PLANO | 4344 | — | — |
| 972-615 | DLFTWTARPT | 4344 | — | — |
| 972-618 | PLANO | 4344 | — | — |
| 972-621 | IRVING | 4344 | — | Yes |
| 972-633 | PLANO | 4344 | — | — |
| 972-646 | BARDWELL | 2154 | — | Yes |
| 972-650 | IRVING | 4344 | — | — |
| 972-652 | IRVING | 4344 | — | Yes |
| 972-653 | IRVING | 4344 | — | Yes |
| 972-655 | IRVING | 4344 | — | Yes |
| 972-657 | IRVING | 4344 | — | Yes |
| 972-659 | IRVING | 4344 | — | — |
| 972-662 | CARROLLTON | 4344 | — | Yes |
| 972-666 | BRISTOL | 2154 | — | Yes |
| 972-675 | PLANO | 4344 | — | Yes |
| 972-691 | LEWISVILLE | 4344 | — | — |
| 972-694 | JOSEPHINE | 2154 | — | Yes |
| 972-695 | CARROLLTON | 4344 | — | Yes |
| 972-696 | PLANO | 4344 | — | Yes |
| 972-714 | IRVING | 4344 | — | — |
| 972-717 | IRVING | 4344 | — | — |
| 972-718 | IRVING | 4344 | — | — |
| 972-719 | IRVING | 4344 | — | — |
| 972-721 | IRVING | 4344 | — | — |
| 972-724 | LEWISVILLE | 4344 | — | — |
| 972-745 | LEWISVILLE | 4344 | — | — |
| 972-751 | IRVING | 4344 | — | — |
| 972-752 | BLUE RIDGE | 2154 | — | Yes |
| 972-753 | IRVING | 4344 | — | — |
| 972-756 | IRVING | 4344 | — | — |
| 972-758 | PLANO | 4344 | — | — |
| 972-769 | PLANO | 4344 | — | Yes |
| 972-781 | PLANO | 4344 | — | Yes |
| 972-785 | IRVING | 4344 | — | Yes |
| 972-790 | IRVING | 4344 | — | — |
| 972-791 | IRVING | 4344 | — | Yes |
| 972-796 | PLANO | 4344 | — | — |
| 972-797 | PLANO | 4344 | — | Yes |
| 972-840 | PLANO | 4344 | — | — |
| 972-842 | FERRIS | 2154 | — | Yes |
| 972-843 | NEVADA | 2154 | — | Yes |
| 972-845 | PALMER | 2154 | — | Yes |
| 972-846 | BRISTOL | 2154 | — | Yes |
| 972-853 | NEVADA | 2154 | — | Yes |
| 972-862 | CARROLLTON | 4344 | — | — |
| 972-864 | PLANO | 4344 | — | — |
| 972-867 | PLANO | 4344 | — | — |
| 972-874 | LEWISVILLE | 4344 | — | — |
| 972-881 | PLANO | 4344 | — | — |
| 972-887 | IRVING | 4344 | — | Yes |
| 972-893 | IRVING | 4344 | — | Yes |
| 972-905 | PLANO | 4344 | 2011-03-24 | Yes |
| 972-915 | IRVING | 4344 | — | — |
| 972-916 | IRVING | 4344 | — | Yes |
| 972-926 | PLANO | 4344 | — | Yes |
| 972-929 | IRVING | 4344 | — | — |
| 972-939 | CARROLLTON | 4344 | — | — |
| 972-941 | PLANO | 4344 | — | Yes |
| 972-947 | DLFTWTARPT | 4344 | — | Yes |
| 972-964 | PLANO | 4344 | — | — |
| 972-966 | LEWISVILLE | 4344 | — | Yes |
| 972-973 | DLFTWTARPT | 4344 | 2004-09-30 | Yes |
| 972-981 | PLANO | 4344 | — | — |
| 972-985 | PLANO | 4344 | — | — |
| 972-986 | IRVING | 4344 | — | — |
These are initial assignees from NANPA CO-code records — because of number portability, the current serving carrier of individual numbers may differ. Bulk export requires a membership.