T-MOBILE USA, INC.
63 prefixes in 509 · initial assignments from the NANPA CO code file, 09/17/2026
| NPA-NXX | Rate center | OCN | Assigned | Pooled |
|---|---|---|---|---|
| 509-200 | WALLAWALLA | 6529 | — | Yes |
| 509-205 | KENNEWICK | 6529 | 2003-02-20 | Yes |
| 509-212 | KENNEWICK | 6529 | 2013-07-23 | Yes |
| 509-230 | SPOKANE | 6529 | — | — |
| 509-251 | SPOKANE | 6529 | — | Yes |
| 509-263 | SPOKANE | 6529 | — | Yes |
| 509-270 | SPOKANE | 6529 | — | Yes |
| 509-273 | ELLENSBURG | 6529 | 2022-10-19 | Yes |
| 509-289 | EPHRATA | 6529 | — | Yes |
| 509-294 | SPOKANE | 6529 | 2001-08-31 | Yes |
| 509-296 | PULLMAN | 6529 | 2022-10-03 | Yes |
| 509-303 | PROSSER | 6529 | — | Yes |
| 509-304 | CLE ELUM | 6529 | — | Yes |
| 509-305 | SUNNYSIDE | 6529 | — | Yes |
| 509-307 | YAKIMA | 6529 | — | Yes |
| 509-308 | KENNEWICK | 6529 | — | Yes |
| 509-310 | WH SALMON | 6529 | — | Yes |
| 509-312 | ELLENSBURG | 6529 | 2001-07-11 | Yes |
| 509-342 | SPOKANE | 6529 | — | Yes |
| 509-361 | MOSES LAKE | 6529 | — | Yes |
| 509-370 | SPOKANE | 6529 | — | Yes |
| 509-387 | WENATCHEE | 6529 | 2003-06-18 | Yes |
| 509-391 | SUNNYSIDE | 6529 | — | Yes |
| 509-405 | KENNEWICK | 6529 | 2016-10-07 | Yes |
| 509-415 | WENATCHEE | 6529 | 2008-02-21 | Yes |
| 509-424 | YAKIMA | 6529 | 2012-05-03 | Yes |
| 509-428 | RITZVILLE | 6529 | — | Yes |
| 509-432 | PULLMAN | 6529 | — | Yes |
| 509-438 | KENNEWICK | 6529 | 2002-06-10 | Yes |
| 509-440 | KENNEWICK | 6529 | 2009-05-27 | Yes |
| 509-460 | KENNEWICK | 6529 | 2001-09-28 | Yes |
| 509-475 | SPOKANE | 6529 | — | Yes |
| 509-504 | YAKIMA | 6529 | 2020-07-09 | Yes |
| 509-512 | MOSES LAKE | 6529 | 2020-10-27 | Yes |
| 509-516 | WALLAWALLA | 6529 | 2021-02-16 | Yes |
| 509-517 | YAKIMA | 6529 | 2021-01-11 | Yes |
| 509-550 | NEWPORT | 6529 | — | Yes |
| 509-552 | CLARKSTON | 6529 | — | Yes |
| 509-553 | COLFAX | 6529 | — | Yes |
| 509-596 | CLARKSTON | 6529 | 2016-03-23 | Yes |
| 509-608 | SPOKANE | 6529 | 2016-04-29 | Yes |
| 509-610 | COLFAX | 6529 | 2021-03-02 | Yes |
| 509-617 | ELLENSBURG | 6529 | 2024-06-08 | Yes |
| 509-701 | SPOKANE | 6529 | — | Yes |
| 509-708 | ELLENSBURG | 6529 | 2025-08-19 | Yes |
| 509-712 | SUNNYSIDE | 6529 | 2021-04-16 | Yes |
| 509-714 | SPOKANE | 6529 | — | Yes |
| 509-718 | ELLENSBURG | 6529 | 2026-01-08 | Yes |
| 509-727 | KENNEWICK | 6529 | — | Yes |
| 509-728 | YAKIMA | 6529 | — | Yes |
| 509-730 | WALLAWALLA | 6529 | 2008-03-06 | Yes |
| 509-741 | WENATCHEE | 6529 | 2001-09-28 | Yes |
| 509-759 | YAKIMA | 6529 | 2011-03-07 | Yes |
| 509-768 | SPOKANE | 6529 | — | — |
| 509-771 | MOSES LAKE | 6529 | — | Yes |
| 509-868 | SPOKANE | 6529 | — | Yes |
| 509-869 | SPOKANE | 6529 | — | Yes |
| 509-879 | SPOKANE | 6529 | — | Yes |
| 509-901 | YAKIMA | 6529 | — | Yes |
| 509-907 | YAKIMA | 6529 | 2016-06-10 | Yes |
| 509-910 | YAKIMA | 6529 | — | Yes |
| 509-919 | SPOKANE | 6529 | 2013-09-13 | Yes |
| 509-986 | ELLENSBURG | 6529 | 2021-11-17 | 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.