All assignees
800 prefixes in 503 · initial assignments from the NANPA CO code file, 09/17/2026
| NPA-NXX | Rate center | OCN | Assigned | Pooled |
|---|---|---|---|---|
| 503-500 | PORTLAND | 794G | 2009-04-06 | Yes |
| 503-501 | PORTLAND | 6010 | 2008-03-10 | Yes |
| 503-502 | PORTLAND | 5820 | — | — |
| 503-503 | SHERWOOD | 750E | 2024-06-04 | Yes |
| 503-504 | PORTLAND | 5820 | — | — |
| 503-505 | PORTLAND | 7172 | 2008-06-03 | Yes |
| 503-506 | STFRD-SNDY | 7531 | — | Yes |
| 503-507 | SALEM | 5820 | — | — |
| 503-508 | SALEM | 6010 | — | Yes |
| 503-509 | STAYTON | 5820 | 2011-07-12 | Yes |
| 503-510 | SALEM | 6010 | — | — |
| 503-511 | XXXXXXXXXX | MULT | — | — |
| 503-512 | GRESHAM | 7537 | — | Yes |
| 503-513 | CLACKAMAS | 9638 | — | — |
| 503-514 | PORTLAND | 6630 | — | — |
| 503-515 | PORTLAND | 6529 | — | — |
| 503-516 | PORTLAND | 6529 | — | — |
| 503-517 | PORTLAND | 7172 | — | — |
| 503-518 | CLACKAMAS | 461J | — | — |
| 503-519 | PORTLAND | 6529 | — | Yes |
| 503-520 | BEAVERTON | 4323 | — | — |
| 503-521 | BEAVERTON | 4323 | — | Yes |
| 503-522 | PORTLAND | 5820 | — | — |
| 503-523 | BEAVERTON | 3234 | — | Yes |
| 503-524 | BEAVERTON | 4323 | — | — |
| 503-525 | PORTLAND | 9638 | — | — |
| 503-526 | BEAVERTON | 4323 | — | — |
| 503-527 | PORTLAND | 6630 | — | — |
| 503-528 | PORTLAND | 9638 | — | Yes |
| 503-529 | PORTLAND | 6630 | — | — |
| 503-530 | BEAVERTON | 7531 | — | Yes |
| 503-531 | BEAVERTON | 4323 | — | — |
| 503-532 | BEAVERTON | 7229 | — | — |
| 503-533 | BEAVERTON | 4323 | — | — |
| 503-534 | CLACKAMAS | 9638 | — | Yes |
| 503-535 | PORTLAND | 7531 | — | Yes |
| 503-536 | BEAVERTON | 3234 | — | Yes |
| 503-537 | NEWBERG | 4323 | — | Yes |
| 503-538 | NEWBERG | 4323 | — | — |
| 503-539 | PORTLAND | 6010 | — | — |
| 503-540 | SALEM | 9638 | — | — |
| 503-541 | — | — | ||
| 503-542 | PORTLAND | 7172 | — | Yes |
| 503-543 | SCAPPOOSE | 2395 | — | Yes |
| 503-544 | PORTLAND | 6529 | — | — |
| 503-545 | PORTLAND | 5820 | 2005-09-22 | Yes |
| 503-546 | PORTLAND | 7172 | — | — |
| 503-547 | BEAVERTON | 4323 | — | Yes |
| 503-548 | PORTLAND | 7172 | — | Yes |
| 503-549 | BEAVERTON | 3234 | — | Yes |
| 503-550 | NEWBERG | 6010 | — | — |
| 503-551 | SALEM | 6010 | — | — |
| 503-552 | PORTLAND | 9638 | — | — |
| 503-553 | PORTLAND | 9638 | — | Yes |
| 503-554 | NEWBERG | 4323 | — | — |
| 503-555 | DIR ASST | MULT | — | — |
| 503-556 | RAINIER | 9638 | — | — |
| 503-557 | CLACKAMAS | 9638 | — | — |
| 503-558 | STFRD-SNDY | 4323 | — | Yes |
| 503-559 | SALEM | 6010 | — | — |
| 503-560 | MCMINNVL | 6529 | — | Yes |
| 503-561 | SALEM | 7172 | — | — |
| 503-562 | SALEM | 7172 | 2003-05-19 | Yes |
| 503-563 | STFRD-SNDY | 3234 | — | Yes |
| 503-564 | HOOD LAND | 3234 | 2005-01-28 | Yes |
| 503-565 | MCMINNVL | 750E | — | Yes |
| 503-566 | SALEM | 9638 | — | — |
| 503-567 | BEAVERTON | 7172 | 2009-03-02 | Yes |
| 503-568 | PORTLAND | 6010 | 2008-08-21 | Yes |
| 503-569 | SALEM | 6529 | — | Yes |
| 503-570 | STFRD-SNDY | 4323 | — | — |
| 503-571 | CLACKAMAS | 9638 | — | — |
| 503-572 | PORTLAND | 6529 | — | Yes |
| 503-573 | GRESHAM | 3234 | — | Yes |
| 503-574 | BEAVERTON | 4323 | — | Yes |
| 503-575 | PORTLAND | 7229 | 2008-11-18 | Yes |
| 503-576 | SALEM | 9638 | — | Yes |
| 503-577 | PORTLAND | 5820 | — | — |
| 503-578 | BEAVERTON | 4323 | — | — |
| 503-579 | BEAVERTON | 4323 | — | — |
| 503-580 | SALEM | 6010 | — | — |
| 503-581 | SALEM | 9638 | — | — |
| 503-582 | STFRD-SNDY | 4323 | — | — |
| 503-583 | MCMINNVL | 5820 | 2008-09-08 | Yes |
| 503-584 | SALEM | 9638 | — | Yes |
| 503-585 | SALEM | 9638 | — | — |
| 503-586 | SALEM | 7172 | — | Yes |
| 503-587 | SALEM | 9638 | — | — |
| 503-588 | SALEM | 9638 | — | — |
| 503-589 | SALEM | 9638 | — | — |
| 503-590 | BEAVERTON | 4323 | — | — |
| 503-591 | BEAVERTON | 4323 | — | — |
| 503-592 | CANBYNEEDY | 7537 | — | Yes |
| 503-593 | PORTLAND | 5820 | 2005-11-14 | Yes |
| 503-594 | CLACKAMAS | 7172 | — | Yes |
| 503-595 | PORTLAND | 7172 | — | — |
| 503-596 | BEAVERTON | 4323 | — | Yes |
| 503-597 | BEAVERTON | 7172 | — | Yes |
| 503-598 | BEAVERTON | 4323 | — | — |
| 503-599 | PORTLAND | 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.