SPOK, INC.
20 prefixes in 972 · initial assignments from the NANPA CO code file, 09/17/2026
| NPA-NXX | Rate center | OCN | Assigned | Pooled |
|---|---|---|---|---|
| 972-229 | GRANDPRARI | 6630 | — | — |
| 972-297 | GRANDPRARI | 6630 | — | — |
| 972-319 | GRANDPRARI | 6630 | — | — |
| 972-320 | GRANDPRARI | 6630 | — | — |
| 972-321 | GRANDPRARI | 6630 | — | — |
| 972-326 | IRVING | 6630 | — | — |
| 972-356 | GRANDPRARI | 6630 | — | — |
| 972-397 | GRANDPRARI | 6630 | — | — |
| 972-451 | GRANDPRARI | 6630 | — | — |
| 972-500 | IRVING | 6630 | — | — |
| 972-545 | IRVING | 6630 | — | — |
| 972-568 | MCKINNEY | 6630 | — | — |
| 972-592 | IRVING | 6630 | — | — |
| 972-593 | IRVING | 6630 | — | — |
| 972-609 | GRANDPRARI | 6630 | — | — |
| 972-622 | GRANDPRARI | 6630 | — | — |
| 972-667 | GRANDPRARI | 6630 | — | — |
| 972-760 | GRANDPRARI | 6630 | — | — |
| 972-902 | GRANDPRARI | 6630 | — | — |
| 972-909 | GRANDPRARI | 6630 | — | — |
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.