All assignees
800 prefixes in 503 · initial assignments from the NANPA CO code file, 09/17/2026
| NPA-NXX | Rate center | OCN | Assigned | Pooled |
|---|---|---|---|---|
| 503-700 | — | — | ||
| 503-701 | PORTLAND | 6010 | — | — |
| 503-702 | PORTLAND | 6010 | — | — |
| 503-703 | PORTLAND | 6010 | — | — |
| 503-704 | PORTLAND | 6010 | — | — |
| 503-705 | PORTLAND | 6010 | — | — |
| 503-706 | PORTLAND | 6010 | — | — |
| 503-707 | BEAVERTON | 7229 | — | Yes |
| 503-708 | PORTLAND | 6010 | — | — |
| 503-709 | PORTLAND | 6010 | — | — |
| 503-710 | WOODBURN | 5820 | — | Yes |
| 503-711 | XXXXXXXXXX | MULT | — | — |
| 503-712 | BEAVERTON | 7229 | — | — |
| 503-713 | BEAVERTON | 3234 | — | Yes |
| 503-714 | DAYTON | 076F | — | Yes |
| 503-715 | PORTLAND | 3234 | — | Yes |
| 503-716 | BEAVERTON | 7229 | — | Yes |
| 503-717 | SEASIDE | 9638 | — | Yes |
| 503-718 | BEAVERTON | 7172 | — | Yes |
| 503-719 | PORTLAND | 6010 | 2008-04-22 | Yes |
| 503-720 | PORTLAND | 6010 | — | — |
| 503-721 | PORTLAND | 9638 | — | — |
| 503-722 | CLACKAMAS | 9638 | — | — |
| 503-723 | CLACKAMAS | 9638 | — | — |
| 503-724 | PORTLAND | 6010 | 2006-08-08 | Yes |
| 503-725 | PORTLAND | 9638 | — | — |
| 503-726 | BEAVERTON | 7172 | — | Yes |
| 503-727 | PORTLAND | 9638 | — | — |
| 503-728 | CLATSKANIE | 4323 | — | Yes |
| 503-729 | PORTLAND | 5820 | 2006-10-23 | Yes |
| 503-730 | PORTLAND | 5820 | — | — |
| 503-731 | PORTLAND | 9638 | — | — |
| 503-732 | BEAVER CRK | 7537 | — | Yes |
| 503-733 | PORTLAND | 9638 | — | — |
| 503-734 | PORTLAND | 7537 | — | Yes |
| 503-735 | PORTLAND | 9638 | — | Yes |
| 503-736 | PORTLAND | 9638 | — | — |
| 503-737 | PORTLAND | 9638 | — | Yes |
| 503-738 | SEASIDE | 9638 | — | Yes |
| 503-739 | SEASIDE | 6010 | — | Yes |
| 503-740 | PORTLAND | 6529 | — | — |
| 503-741 | ASTORIA | 6529 | — | Yes |
| 503-742 | CLACKAMAS | 9638 | — | Yes |
| 503-743 | AUMSVLTRNR | 4323 | — | Yes |
| 503-744 | CLACKAMAS | 750E | — | Yes |
| 503-745 | PORTLAND | 7229 | — | — |
| 503-746 | BEAVERTON | 7531 | — | Yes |
| 503-747 | BEAVERTON | 7531 | — | Yes |
| 503-748 | BEAVERTON | 7172 | — | Yes |
| 503-749 | AUMSVLTRNR | 4323 | — | Yes |
| 503-750 | PORTLAND | 6529 | — | — |
| 503-751 | DALLAS | 9638 | — | Yes |
| 503-752 | PORTLAND | 6529 | — | Yes |
| 503-753 | PORTLAND | 6529 | — | Yes |
| 503-754 | PORTLAND | 6529 | — | Yes |
| 503-755 | JEWELL | 2360 | — | Yes |
| 503-756 | PORTLAND | 6529 | — | Yes |
| 503-757 | PORTLAND | 6529 | — | Yes |
| 503-758 | PORTLAND | 5820 | 2005-08-16 | Yes |
| 503-759 | MOLALLA | 2383 | — | — |
| 503-760 | PORTLAND | 9638 | — | — |
| 503-761 | PORTLAND | 9638 | — | — |
| 503-762 | PORTLAND | 9638 | — | — |
| 503-763 | SALEM | 9638 | — | — |
| 503-764 | PORTLAND | 7172 | 2005-10-12 | Yes |
| 503-765 | CLACKAMAS | 7531 | — | Yes |
| 503-766 | GRESHAM | 7531 | — | Yes |
| 503-767 | STAYTON | 2399 | — | — |
| 503-768 | PORTLAND | 9638 | — | — |
| 503-769 | STAYTON | 2399 | — | — |
| 503-770 | CHARBONNEU | 7537 | — | Yes |
| 503-771 | PORTLAND | 9638 | — | — |
| 503-772 | PORTLAND | 9638 | — | — |
| 503-773 | NORTH PL | 7537 | — | Yes |
| 503-774 | PORTLAND | 9638 | — | — |
| 503-775 | PORTLAND | 9638 | — | — |
| 503-776 | AURORA | 7537 | — | Yes |
| 503-777 | PORTLAND | 9638 | — | — |
| 503-778 | PORTLAND | 9638 | — | Yes |
| 503-779 | SALEM | 7172 | — | Yes |
| 503-780 | PORTLAND | 6010 | — | — |
| 503-781 | PORTLAND | 6010 | — | — |
| 503-782 | PACIFIC CY | 3234 | 2005-02-09 | Yes |
| 503-783 | STFRD-SNDY | 7172 | — | Yes |
| 503-784 | PORTLAND | 6010 | — | — |
| 503-785 | CLACKAMAS | 9638 | — | Yes |
| 503-786 | CLACKAMAS | 9638 | — | — |
| 503-787 | FALLS CITY | 9638 | — | Yes |
| 503-788 | PORTLAND | 9638 | — | — |
| 503-789 | PORTLAND | 6010 | — | — |
| 503-790 | PORTLAND | 9638 | — | — |
| 503-791 | ASTORIA | 6010 | — | Yes |
| 503-792 | GERVAIS | 2373 | — | — |
| 503-793 | PORTLAND | 6529 | — | Yes |
| 503-794 | CLACKAMAS | 9638 | — | — |
| 503-795 | PORTLAND | 9638 | — | — |
| 503-796 | PORTLAND | 9638 | — | — |
| 503-797 | PORTLAND | 9638 | — | — |
| 503-798 | SALEM | 7172 | — | Yes |
| 503-799 | PORTLAND | 6010 | — | — |
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.