All assignees
800 prefixes in 503 · initial assignments from the NANPA CO code file, 09/17/2026
| NPA-NXX | Rate center | OCN | Assigned | Pooled |
|---|---|---|---|---|
| 503-600 | MOLALLA | 936F | 2009-06-19 | Yes |
| 503-601 | BEAVERTON | 7172 | — | Yes |
| 503-602 | SALEM | 6529 | — | Yes |
| 503-603 | BEAVERTON | 4323 | — | — |
| 503-604 | PORTLAND | 6630 | — | — |
| 503-605 | BEAVERTON | 4323 | — | — |
| 503-606 | DALLAS | 9638 | — | Yes |
| 503-607 | CLACKAMAS | 7172 | — | Yes |
| 503-608 | BEAVERTON | 7537 | — | Yes |
| 503-609 | CORBETT | 076F | 2004-08-13 | Yes |
| 503-610 | SHERWOOD | 7229 | — | Yes |
| 503-611 | XXXXXXXXXX | MULT | — | — |
| 503-612 | STFRD-SNDY | 4323 | — | — |
| 503-613 | BEAVERTON | 7229 | — | — |
| 503-614 | BEAVERTON | 4323 | — | — |
| 503-615 | BEAVERTON | 4323 | — | — |
| 503-616 | BEAVERTON | 7229 | — | Yes |
| 503-617 | BEAVERTON | 4323 | — | — |
| 503-618 | GRESHAM | 4323 | — | — |
| 503-619 | BEAVERTON | 7172 | — | Yes |
| 503-620 | BEAVERTON | 4323 | — | — |
| 503-621 | PORTLAND | 9638 | — | Yes |
| 503-622 | HOOD LAND | 4323 | — | Yes |
| 503-623 | DALLAS | 9638 | — | — |
| 503-624 | BEAVERTON | 4323 | — | — |
| 503-625 | SHERWOOD | 4323 | — | — |
| 503-626 | BEAVERTON | 4323 | — | — |
| 503-627 | BEAVERTON | 4323 | — | — |
| 503-628 | BEAVERTON | 4323 | — | Yes |
| 503-629 | BEAVERTON | 4323 | — | — |
| 503-630 | ESTACADA | 2371 | — | — |
| 503-631 | REDLAND | 2363 | — | — |
| 503-632 | BEAVER CRK | 2359 | — | — |
| 503-633 | ST PAUL | 2396 | — | — |
| 503-634 | MONITOR | 2384 | — | — |
| 503-635 | CLACKAMAS | 9638 | — | — |
| 503-636 | CLACKAMAS | 9638 | — | — |
| 503-637 | ESTACADA | 2371 | — | — |
| 503-638 | STFRD-SNDY | 4323 | — | — |
| 503-639 | BEAVERTON | 4323 | — | — |
| 503-640 | BEAVERTON | 4323 | — | — |
| 503-641 | BEAVERTON | 4323 | — | — |
| 503-642 | BEAVERTON | 4323 | — | — |
| 503-643 | BEAVERTON | 4323 | — | — |
| 503-644 | BEAVERTON | 4323 | — | — |
| 503-645 | BEAVERTON | 4323 | — | — |
| 503-646 | BEAVERTON | 4323 | — | — |
| 503-647 | NORTH PL | 9638 | — | Yes |
| 503-648 | BEAVERTON | 4323 | — | — |
| 503-649 | BEAVERTON | 4323 | — | — |
| 503-650 | CLACKAMAS | 9638 | — | — |
| 503-651 | CANBYNEEDY | 2362 | — | — |
| 503-652 | CLACKAMAS | 9638 | — | — |
| 503-653 | CLACKAMAS | 9638 | — | — |
| 503-654 | CLACKAMAS | 9638 | — | — |
| 503-655 | CLACKAMAS | 9638 | — | — |
| 503-656 | CLACKAMAS | 9638 | — | — |
| 503-657 | CLACKAMAS | 9638 | — | — |
| 503-658 | STFRD-SNDY | 4323 | — | Yes |
| 503-659 | CLACKAMAS | 9638 | — | — |
| 503-660 | GRESHAM | 4323 | — | Yes |
| 503-661 | GRESHAM | 4323 | — | — |
| 503-662 | YAMHILL | 4323 | — | Yes |
| 503-663 | GRESHAM | 4323 | — | Yes |
| 503-664 | BEAVER | 6529 | 2004-09-17 | Yes |
| 503-665 | GRESHAM | 4323 | — | — |
| 503-666 | GRESHAM | 4323 | — | — |
| 503-667 | GRESHAM | 4323 | — | — |
| 503-668 | STFRD-SNDY | 4323 | — | — |
| 503-669 | GRESHAM | 4323 | — | — |
| 503-670 | BEAVERTON | 4323 | — | — |
| 503-671 | BEAVERTON | 4323 | — | Yes |
| 503-672 | BEAVERTON | 4323 | — | — |
| 503-673 | STFRD-SNDY | 4323 | — | Yes |
| 503-674 | GRESHAM | 4323 | — | — |
| 503-675 | CLACKAMAS | 9638 | — | — |
| 503-676 | GRESHAM | 7531 | — | Yes |
| 503-677 | BEAVERTON | 4323 | — | — |
| 503-678 | AURORA | 2395 | — | Yes |
| 503-679 | PORTLAND | 5820 | — | — |
| 503-680 | PORTLAND | 5820 | — | — |
| 503-681 | BEAVERTON | 4323 | — | — |
| 503-682 | STFRD-SNDY | 4323 | — | — |
| 503-683 | CLACKAMAS | 7531 | — | Yes |
| 503-684 | BEAVERTON | 4323 | — | — |
| 503-685 | STFRD-SNDY | 4323 | — | — |
| 503-686 | BEAVERTON | 7531 | — | Yes |
| 503-687 | MCMINNVL | 4697 | — | — |
| 503-688 | PORTLAND | 7172 | — | Yes |
| 503-689 | SALEM | 6010 | — | Yes |
| 503-690 | BEAVERTON | 4323 | — | — |
| 503-691 | STFRD-SNDY | 4323 | — | — |
| 503-692 | STFRD-SNDY | 4323 | — | — |
| 503-693 | BEAVERTON | 4323 | — | — |
| 503-694 | CHARBONNEU | 2395 | — | Yes |
| 503-695 | CORBETT | 2371 | — | — |
| 503-696 | BEAVERTON | 7229 | — | — |
| 503-697 | CLACKAMAS | 9638 | — | — |
| 503-698 | STFRD-SNDY | 4323 | — | Yes |
| 503-699 | CLACKAMAS | 9638 | — | — |
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.