SOUTHWESTERN BELL TELEPHONE COMPANY - TX
17 prefixes in 972 · initial assignments from the NANPA CO code file, 09/17/2026
| NPA-NXX | Rate center | OCN | Assigned | Pooled |
|---|---|---|---|---|
| 972-309 | PLANO | 7726 | — | Yes |
| 972-312 | PLANO | 7726 | — | Yes |
| 972-398 | PLANO | 7726 | — | — |
| 972-526 | PLANO | 7726 | 2002-10-23 | Yes |
| 972-583 | PLANO | 7726 | — | Yes |
| 972-673 | PLANO | 7726 | — | Yes |
| 972-801 | PLANO | 7726 | — | Yes |
| 972-817 | IRVING | 7726 | 2016-07-21 | Yes |
| 972-820 | CARROLLTON | 7726 | — | Yes |
| 972-870 | IRVING | 7726 | — | — |
| 972-871 | IRVING | 7726 | — | — |
| 972-906 | LEWISVILLE | 7726 | — | Yes |
| 972-943 | PLANO | 7726 | — | — |
| 972-953 | IRVING | 7726 | — | Yes |
| 972-956 | LEWISVILLE | 7726 | — | — |
| 972-983 | IRVING | 7726 | — | Yes |
| 972-990 | IRVING | 7726 | 2017-03-27 | Yes |
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.