All assignees
778 prefixes in 509 · initial assignments from the NANPA CO code file, 09/17/2026
| NPA-NXX | Rate center | OCN | Assigned | Pooled |
|---|---|---|---|---|
| 509-801 | YAKIMA | 6010 | 2026-08-28 | Yes |
| 509-802 | KENNEWICK | 622J | — | Yes |
| 509-808 | SPOKANE | 6010 | 2011-08-22 | Yes |
| 509-811 | XXXXXXXXXX | MULT | — | — |
| 509-816 | SPOKANE | 965H | 2020-07-14 | Yes |
| 509-818 | SPOKANE | 483H | — | Yes |
| 509-820 | KENNEWICK | 5812 | 2014-09-18 | Yes |
| 509-821 | DEER PARK | 5812 | 2012-06-13 | Yes |
| 509-822 | SPOKANE | 483E | 2011-12-16 | Yes |
| 509-823 | YAKIMA | 5812 | 2008-02-22 | Yes |
| 509-824 | SPOKANE | 006F | 2019-11-07 | Yes |
| 509-825 | MEDICAL LK | 318J | 2023-04-03 | Yes |
| 509-826 | OMAK | 9638 | — | — |
| 509-827 | RICHLAND | 7274 | 2018-08-22 | Yes |
| 509-828 | SPOKANE | 9638 | 2010-06-04 | Yes |
| 509-829 | TOPPENISH | 4521 | — | Yes |
| 509-830 | SUNNYSIDE | 6270 | — | Yes |
| 509-831 | SUNNYSIDE | 6270 | — | Yes |
| 509-832 | PROSSER | 6270 | — | Yes |
| 509-833 | YAKIMA | 6010 | 2002-04-30 | — |
| 509-834 | YAKIMA | 7173 | — | Yes |
| 509-835 | SPOKANE | 9638 | — | — |
| 509-836 | SUNNYSIDE | 4521 | — | Yes |
| 509-837 | SUNNYSIDE | 4521 | — | — |
| 509-838 | SPOKANE | 9638 | — | — |
| 509-839 | SUNNYSIDE | 4521 | — | — |
| 509-840 | SUNNYSIDE | 6010 | — | Yes |
| 509-841 | WAITSBURG | 159F | 2015-02-13 | Yes |
| 509-842 | SPOKANE | 7421 | — | Yes |
| 509-843 | POMEROY | 9638 | — | Yes |
| 509-844 | SPOKANE | 841C | 2002-04-16 | Yes |
| 509-845 | PASCO | 6010 | 2002-04-30 | Yes |
| 509-846 | OMAK | 9638 | — | Yes |
| 509-847 | SPOKANE | 7229 | — | Yes |
| 509-848 | HARRAH | 4521 | — | Yes |
| 509-849 | PRESCOTT | 2423 | — | Yes |
| 509-850 | SPOKANE | 006F | 2008-06-18 | Yes |
| 509-851 | PASCO | 5562 | — | Yes |
| 509-852 | CLE ELUM | 9638 | — | Yes |
| 509-853 | YAKIMA | 7173 | — | Yes |
| 509-854 | GRANGER | 4521 | — | Yes |
| 509-855 | MOSES LAKE | 6121 | 2002-07-17 | Yes |
| 509-856 | ELLENSBURG | 2412 | — | Yes |
| 509-857 | ELLENSBURG | 2412 | — | Yes |
| 509-859 | ELLENSBURG | 6270 | — | Yes |
| 509-860 | WENATCHEE | 5812 | — | Yes |
| 509-861 | OMAK | 483E | — | Yes |
| 509-862 | SPOKANE | 5812 | 2017-06-15 | Yes |
| 509-863 | SPOKANE | 6010 | — | Yes |
| 509-864 | TOPPENISH | 5812 | 2019-05-06 | Yes |
| 509-865 | TOPPENISH | 4521 | — | — |
| 509-866 | SPOKANE | 197D | 2017-12-14 | Yes |
| 509-867 | SPOKANE | 624H | 2017-09-07 | Yes |
| 509-868 | SPOKANE | 6529 | — | Yes |
| 509-869 | SPOKANE | 6529 | — | Yes |
| 509-870 | KENNEWICK | 483E | — | Yes |
| 509-871 | OROVILLE | 483E | 2001-11-07 | Yes |
| 509-872 | GARRISON | 4321 | — | Yes |
| 509-873 | KENNEWICK | 6010 | 2018-10-19 | Yes |
| 509-874 | WHITE SWAN | 4521 | — | Yes |
| 509-875 | PATERSON | 4521 | — | Yes |
| 509-876 | WALLAWALLA | 792K | — | Yes |
| 509-877 | WAPATO | 4521 | — | Yes |
| 509-878 | PALOUSE | 4324 | — | Yes |
| 509-879 | SPOKANE | 6529 | — | Yes |
| 509-880 | SPOKANE | 9748 | — | — |
| 509-881 | WENATCHEE | 4324 | — | Yes |
| 509-882 | GRANDVIEW | 4521 | — | — |
| 509-883 | WENATCHEE | 624H | 2021-01-31 | Yes |
| 509-884 | WENATCHEE | 4324 | — | — |
| 509-885 | WENATCHEE | 7274 | 2003-07-16 | Yes |
| 509-886 | WENATCHEE | 4324 | — | — |
| 509-887 | RITZVILLE | 2408 | — | Yes |
| 509-888 | WENATCHEE | 3229 | 2001-03-19 | — |
| 509-889 | SPOKANE | 9748 | — | — |
| 509-890 | DEER PARK | 159F | 2016-03-08 | Yes |
| 509-891 | SPOKANE | 9638 | — | — |
| 509-892 | SPOKANE | 9638 | — | — |
| 509-893 | SPOKANE | 9638 | — | Yes |
| 509-894 | MABTON | 4521 | — | Yes |
| 509-895 | YAKIMA | 7173 | — | Yes |
| 509-896 | MABTON | 4521 | — | Yes |
| 509-897 | WALLAWALLA | 9638 | — | Yes |
| 509-898 | MOSES LAKE | 9638 | — | Yes |
| 509-899 | ELLENSBURG | 6010 | — | Yes |
| 509-900 | SPOKANE | 145J | 2019-02-25 | Yes |
| 509-901 | YAKIMA | 6529 | — | Yes |
| 509-902 | YAKIMA | 792K | 2016-06-07 | Yes |
| 509-903 | LIBERTY LK | 6121 | 2015-01-15 | Yes |
| 509-904 | SPOKANE | 6121 | 2016-12-07 | Yes |
| 509-905 | PASCO | 6121 | 2019-06-20 | Yes |
| 509-906 | EPHRATA | 5812 | 2018-01-17 | Yes |
| 509-907 | YAKIMA | 6529 | 2016-06-10 | Yes |
| 509-909 | PULLMAN | 114J | 2026-05-11 | Yes |
| 509-910 | YAKIMA | 6529 | — | Yes |
| 509-911 | XXXXXXXXXX | MULT | — | — |
| 509-913 | OTHELLO | 508J | 2015-01-06 | Yes |
| 509-917 | REARDAN | 006F | 2024-12-26 | Yes |
| 509-918 | SPOKANE | 483E | 2021-02-01 | Yes |
| 509-919 | SPOKANE | 6529 | 2013-09-13 | 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.