All assignees
800 prefixes in 503 · initial assignments from the NANPA CO code file, 09/17/2026
| NPA-NXX | Rate center | OCN | Assigned | Pooled |
|---|---|---|---|---|
| 503-800 | GERVAIS | 936F | 2009-06-19 | Yes |
| 503-801 | TILLAMOOK | 6010 | — | Yes |
| 503-802 | PORTLAND | 7172 | — | — |
| 503-803 | PORTLAND | 6010 | — | — |
| 503-804 | PORTLAND | 6010 | — | — |
| 503-805 | PORTLAND | 6010 | — | — |
| 503-806 | PORTLAND | 6010 | — | — |
| 503-807 | PORTLAND | 6010 | — | — |
| 503-808 | PORTLAND | 7172 | — | Yes |
| 503-809 | NORTH PL | 6529 | — | Yes |
| 503-810 | PORTLAND | 6529 | — | — |
| 503-811 | XXXXXXXXXX | MULT | — | — |
| 503-812 | TILLAMOOK | 5820 | — | Yes |
| 503-813 | PORTLAND | 9638 | — | — |
| 503-814 | SALEM | 7172 | 2008-09-26 | Yes |
| 503-815 | TILLAMOOK | 4520 | — | — |
| 503-816 | PORTLAND | 6010 | — | — |
| 503-817 | PORTLAND | 6630 | — | — |
| 503-818 | PORTLAND | 6630 | — | — |
| 503-819 | PORTLAND | 6010 | — | — |
| 503-820 | PORTLAND | 7229 | — | Yes |
| 503-821 | PORTLAND | 7229 | — | Yes |
| 503-822 | SHERWOOD | 3234 | — | Yes |
| 503-823 | PORTLAND | 9638 | — | — |
| 503-824 | COLTON | 2364 | — | — |
| 503-825 | SHERWOOD | 7531 | — | Yes |
| 503-826 | STFRD-SNDY | 4323 | — | Yes |
| 503-827 | PORTLAND | 9638 | — | — |
| 503-828 | BEAVERTON | 3234 | — | Yes |
| 503-829 | MOLALLA | 2383 | — | — |
| 503-830 | PORTLAND | 6010 | — | — |
| 503-831 | DALLAS | 9638 | — | Yes |
| 503-832 | STFRD-SNDY | 750E | — | Yes |
| 503-833 | PORTLAND | 9638 | — | Yes |
| 503-834 | ESTACADA | 2371 | — | — |
| 503-835 | AMITY | 4323 | — | — |
| 503-836 | ASTORIA | 3234 | 2001-05-08 | Yes |
| 503-837 | DALLAS | 750E | — | Yes |
| 503-838 | DALLAS | 9638 | — | — |
| 503-839 | PORTLAND | 6010 | 2006-07-28 | Yes |
| 503-840 | BEAVERTON | 7537 | — | Yes |
| 503-841 | PORTLAND | 6529 | 2005-10-21 | Yes |
| 503-842 | TILLAMOOK | 4520 | — | — |
| 503-843 | SHERIDAN | 4520 | — | Yes |
| 503-844 | BEAVERTON | 4323 | — | — |
| 503-845 | MOUNTANGEL | 2386 | — | — |
| 503-846 | BEAVERTON | 4323 | — | — |
| 503-847 | PORTLAND | 6010 | 2008-11-19 | Yes |
| 503-848 | BEAVERTON | 517K | — | — |
| 503-849 | PORTLAND | 6529 | — | Yes |
| 503-850 | CLACKAMAS | 7537 | — | Yes |
| 503-851 | SALEM | 6529 | — | — |
| 503-852 | CARLTON | 4520 | — | Yes |
| 503-853 | PORTLAND | 5820 | 2006-02-24 | Yes |
| 503-854 | DETROIT | 4323 | — | Yes |
| 503-855 | STFRD-SNDY | 7537 | — | Yes |
| 503-856 | SALEM | 9638 | — | Yes |
| 503-857 | MCMINNVL | 7537 | — | Yes |
| 503-858 | BEAVERTON | 7537 | — | Yes |
| 503-859 | LYONS | 2391 | — | — |
| 503-860 | PORTLAND | 6010 | — | — |
| 503-861 | WARRENTON | 9638 | — | Yes |
| 503-862 | SHERWOOD | 7537 | — | Yes |
| 503-863 | PORTLAND | 6010 | 2006-10-17 | Yes |
| 503-864 | DAYTON | 4323 | — | Yes |
| 503-865 | PORTLAND | 9638 | — | — |
| 503-866 | PORTLAND | 6010 | — | Yes |
| 503-867 | PORTLAND | 5820 | 2006-08-17 | Yes |
| 503-868 | GRAND IS | 4323 | — | Yes |
| 503-869 | PORTLAND | 6010 | — | — |
| 503-870 | PORTLAND | 6630 | — | — |
| 503-871 | SALEM | 5820 | — | — |
| 503-872 | PORTLAND | 9638 | — | — |
| 503-873 | SILVERTON | 4323 | — | — |
| 503-874 | SILVERTON | 4323 | — | Yes |
| 503-875 | PORTLAND | 6010 | 2006-07-20 | Yes |
| 503-876 | WILLAMINA | 4520 | — | Yes |
| 503-877 | SALEM | 5820 | 2009-08-11 | Yes |
| 503-878 | STFRD-SNDY | 7229 | — | Yes |
| 503-879 | GRANDRONDE | 4520 | — | Yes |
| 503-880 | PORTLAND | 6010 | — | — |
| 503-881 | SALEM | 6010 | — | — |
| 503-882 | CLACKAMAS | 7537 | — | Yes |
| 503-883 | MCMINNVL | 7172 | — | Yes |
| 503-884 | SALEM | 6529 | — | Yes |
| 503-885 | STFRD-SNDY | 4323 | — | Yes |
| 503-886 | PORTLAND | 9638 | — | Yes |
| 503-887 | PORTLAND | 6010 | — | — |
| 503-888 | PORTLAND | 6529 | — | — |
| 503-889 | PORTLAND | 7531 | — | Yes |
| 503-890 | PORTLAND | 6529 | — | Yes |
| 503-891 | PORTLAND | 6529 | — | Yes |
| 503-892 | PORTLAND | 9638 | — | — |
| 503-893 | PORTLAND | 515J | 2009-07-10 | Yes |
| 503-894 | PORTLAND | 5820 | 2009-08-28 | Yes |
| 503-895 | HOOD LAND | 750E | 2006-11-15 | Yes |
| 503-896 | PORTLAND | 5820 | 2007-09-20 | Yes |
| 503-897 | MILL CITY | 4323 | — | Yes |
| 503-898 | REDLAND | 461J | 2006-02-22 | Yes |
| 503-899 | NEWBERG | 7537 | — | 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.