All assignees
778 prefixes in 509 · initial assignments from the NANPA CO code file, 09/17/2026
| NPA-NXX | Rate center | OCN | Assigned | Pooled |
|---|---|---|---|---|
| 509-920 | CHEWELAH | 490J | 2022-08-02 | Yes |
| 509-921 | SPOKANE | 9638 | — | — |
| 509-922 | SPOKANE | 9638 | — | — |
| 509-923 | PATEROS | 9638 | — | Yes |
| 509-924 | SPOKANE | 9638 | — | — |
| 509-925 | ELLENSBURG | 2412 | — | — |
| 509-926 | SPOKANE | 9638 | — | — |
| 509-927 | SPOKANE | 9638 | — | — |
| 509-928 | SPOKANE | 9638 | — | — |
| 509-929 | ELLENSBURG | 6270 | — | Yes |
| 509-930 | YAKIMA | 6270 | — | Yes |
| 509-931 | SPOKANE | 6121 | — | Yes |
| 509-932 | MATTAWA | 4521 | — | Yes |
| 509-933 | ELLENSBURG | 2412 | — | — |
| 509-934 | SPOKANE | 5812 | 2016-01-15 | Yes |
| 509-935 | CHEWELAH | 2408 | — | Yes |
| 509-936 | CHEWELAH | 5812 | — | Yes |
| 509-937 | CHEWELAH | 2408 | — | — |
| 509-938 | YAKIMA | 6010 | 2024-11-26 | Yes |
| 509-939 | SPOKANE | 5812 | — | — |
| 509-940 | RICHLAND | 483E | 2001-12-11 | Yes |
| 509-941 | YAKIMA | 6270 | — | Yes |
| 509-942 | RICHLAND | 4324 | — | Yes |
| 509-943 | RICHLAND | 4324 | — | — |
| 509-944 | SPOKANE | 9638 | — | Yes |
| 509-945 | YAKIMA | 6270 | — | Yes |
| 509-946 | RICHLAND | 4324 | — | — |
| 509-947 | KENNEWICK | 6270 | — | Yes |
| 509-948 | KENNEWICK | 6270 | — | Yes |
| 509-949 | YAKIMA | 6270 | — | Yes |
| 509-950 | — | — | ||
| 509-951 | SPOKANE | 5812 | — | — |
| 509-952 | YAKIMA | 6010 | — | — |
| 509-953 | SPOKANE | 5812 | — | — |
| 509-954 | SPOKANE | 5812 | — | Yes |
| 509-955 | YAKIMA | 483E | 2001-12-11 | Yes |
| 509-956 | WALLAWALLA | 5562 | 2003-10-31 | Yes |
| 509-957 | SPOKANE | 478J | 2020-08-31 | Yes |
| 509-958 | — | — | ||
| 509-959 | — | — | ||
| 509-960 | SPOKANE | 483E | 2015-09-25 | Yes |
| 509-961 | YAKIMA | 6010 | — | — |
| 509-962 | ELLENSBURG | 2412 | — | — |
| 509-963 | ELLENSBURG | 2412 | — | — |
| 509-964 | ELLENSBURG | 2412 | — | Yes |
| 509-965 | YAKIMA | 9638 | — | — |
| 509-966 | YAKIMA | 9638 | — | — |
| 509-967 | RICHLAND | 4324 | — | — |
| 509-968 | ELLENSBURG | 2412 | — | Yes |
| 509-969 | YAKIMA | 6010 | — | — |
| 509-970 | SPOKANE | 490J | 2021-12-16 | Yes |
| 509-972 | YAKIMA | 9638 | — | Yes |
| 509-973 | WHITSTRAN | 4521 | — | Yes |
| 509-975 | PASCO | 5812 | 2019-06-19 | Yes |
| 509-976 | — | — | ||
| 509-977 | CRESTON | 1477 | 2002-09-11 | Yes |
| 509-978 | NESPELEM | 6121 | 2002-09-11 | Yes |
| 509-979 | SPOKANE | 6010 | — | — |
| 509-980 | CONNELL | 6121 | — | Yes |
| 509-981 | SPOKANE | 6010 | — | — |
| 509-982 | ODESSA | 2408 | — | Yes |
| 509-983 | STARBUCK | 6121 | 2002-09-11 | Yes |
| 509-984 | SPOKANE | 7229 | — | Yes |
| 509-985 | YAKIMA | 6270 | — | Yes |
| 509-986 | ELLENSBURG | 6529 | 2021-11-17 | Yes |
| 509-987 | KENNEWICK | 6270 | — | Yes |
| 509-988 | ODESSA | 6010 | — | Yes |
| 509-989 | MOSES LAKE | 6010 | — | Yes |
| 509-990 | SPOKANE | 6010 | — | — |
| 509-991 | SPOKANE | 5812 | — | — |
| 509-992 | SPOKANE | 073H | — | Yes |
| 509-993 | SPOKANE | 5812 | — | — |
| 509-994 | SPOKANE | 6010 | — | — |
| 509-995 | SPOKANE | 6010 | — | — |
| 509-996 | TWISP | 2408 | — | Yes |
| 509-997 | TWISP | 2408 | — | Yes |
| 509-998 | SPOKANE | 5812 | — | Yes |
| 509-999 | SPOKANE | 5812 | — | — |
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.