QWEST CORPORATION
222 prefixes in 503 · initial assignments from the NANPA CO code file, 09/17/2026
| NPA-NXX | Rate center | OCN | Assigned | Pooled |
|---|---|---|---|---|
| 503-408 | PORTLAND | 9638 | — | — |
| 503-412 | PORTLAND | 9638 | — | Yes |
| 503-413 | PORTLAND | 9638 | — | Yes |
| 503-414 | PORTLAND | 9638 | — | — |
| 503-415 | PORTLAND | 9638 | — | Yes |
| 503-417 | PORTLAND | 9638 | — | — |
| 503-418 | PORTLAND | 9638 | — | — |
| 503-423 | PORTLAND | 9638 | — | Yes |
| 503-425 | PORTLAND | 9638 | — | Yes |
| 503-436 | CANNON BCH | 9638 | — | Yes |
| 503-441 | PORTLAND | 9638 | — | — |
| 503-450 | PORTLAND | 9638 | — | — |
| 503-452 | PORTLAND | 9638 | — | — |
| 503-455 | WESTPORT | 9638 | — | Yes |
| 503-460 | PORTLAND | 9638 | — | Yes |
| 503-463 | SALEM | 9638 | — | — |
| 503-464 | PORTLAND | 9638 | — | Yes |
| 503-471 | PORTLAND | 9638 | — | — |
| 503-478 | PORTLAND | 9638 | — | — |
| 503-493 | PORTLAND | 9638 | — | — |
| 503-494 | PORTLAND | 9638 | — | — |
| 503-497 | PORTLAND | 9638 | — | — |
| 503-499 | PORTLAND | 9638 | — | — |
| 503-513 | CLACKAMAS | 9638 | — | — |
| 503-525 | PORTLAND | 9638 | — | — |
| 503-528 | PORTLAND | 9638 | — | Yes |
| 503-534 | CLACKAMAS | 9638 | — | Yes |
| 503-540 | SALEM | 9638 | — | — |
| 503-552 | PORTLAND | 9638 | — | — |
| 503-553 | PORTLAND | 9638 | — | Yes |
| 503-556 | RAINIER | 9638 | — | — |
| 503-557 | CLACKAMAS | 9638 | — | — |
| 503-566 | SALEM | 9638 | — | — |
| 503-571 | CLACKAMAS | 9638 | — | — |
| 503-576 | SALEM | 9638 | — | Yes |
| 503-581 | SALEM | 9638 | — | — |
| 503-584 | SALEM | 9638 | — | Yes |
| 503-585 | SALEM | 9638 | — | — |
| 503-587 | SALEM | 9638 | — | — |
| 503-588 | SALEM | 9638 | — | — |
| 503-589 | SALEM | 9638 | — | — |
| 503-606 | DALLAS | 9638 | — | Yes |
| 503-621 | PORTLAND | 9638 | — | Yes |
| 503-623 | DALLAS | 9638 | — | — |
| 503-635 | CLACKAMAS | 9638 | — | — |
| 503-636 | CLACKAMAS | 9638 | — | — |
| 503-647 | NORTH PL | 9638 | — | Yes |
| 503-650 | CLACKAMAS | 9638 | — | — |
| 503-652 | CLACKAMAS | 9638 | — | — |
| 503-653 | CLACKAMAS | 9638 | — | — |
| 503-654 | CLACKAMAS | 9638 | — | — |
| 503-655 | CLACKAMAS | 9638 | — | — |
| 503-656 | CLACKAMAS | 9638 | — | — |
| 503-657 | CLACKAMAS | 9638 | — | — |
| 503-659 | CLACKAMAS | 9638 | — | — |
| 503-675 | CLACKAMAS | 9638 | — | — |
| 503-697 | CLACKAMAS | 9638 | — | — |
| 503-699 | CLACKAMAS | 9638 | — | — |
| 503-717 | SEASIDE | 9638 | — | Yes |
| 503-721 | PORTLAND | 9638 | — | — |
| 503-722 | CLACKAMAS | 9638 | — | — |
| 503-723 | CLACKAMAS | 9638 | — | — |
| 503-725 | PORTLAND | 9638 | — | — |
| 503-727 | PORTLAND | 9638 | — | — |
| 503-731 | PORTLAND | 9638 | — | — |
| 503-733 | PORTLAND | 9638 | — | — |
| 503-735 | PORTLAND | 9638 | — | Yes |
| 503-736 | PORTLAND | 9638 | — | — |
| 503-737 | PORTLAND | 9638 | — | Yes |
| 503-738 | SEASIDE | 9638 | — | Yes |
| 503-742 | CLACKAMAS | 9638 | — | Yes |
| 503-751 | DALLAS | 9638 | — | Yes |
| 503-760 | PORTLAND | 9638 | — | — |
| 503-761 | PORTLAND | 9638 | — | — |
| 503-762 | PORTLAND | 9638 | — | — |
| 503-763 | SALEM | 9638 | — | — |
| 503-768 | PORTLAND | 9638 | — | — |
| 503-771 | PORTLAND | 9638 | — | — |
| 503-772 | PORTLAND | 9638 | — | — |
| 503-774 | PORTLAND | 9638 | — | — |
| 503-775 | PORTLAND | 9638 | — | — |
| 503-777 | PORTLAND | 9638 | — | — |
| 503-778 | PORTLAND | 9638 | — | Yes |
| 503-785 | CLACKAMAS | 9638 | — | Yes |
| 503-786 | CLACKAMAS | 9638 | — | — |
| 503-787 | FALLS CITY | 9638 | — | Yes |
| 503-788 | PORTLAND | 9638 | — | — |
| 503-790 | PORTLAND | 9638 | — | — |
| 503-794 | CLACKAMAS | 9638 | — | — |
| 503-795 | PORTLAND | 9638 | — | — |
| 503-796 | PORTLAND | 9638 | — | — |
| 503-797 | PORTLAND | 9638 | — | — |
| 503-813 | PORTLAND | 9638 | — | — |
| 503-823 | PORTLAND | 9638 | — | — |
| 503-827 | PORTLAND | 9638 | — | — |
| 503-831 | DALLAS | 9638 | — | Yes |
| 503-833 | PORTLAND | 9638 | — | Yes |
| 503-838 | DALLAS | 9638 | — | — |
| 503-856 | SALEM | 9638 | — | Yes |
| 503-861 | WARRENTON | 9638 | — | 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.