T-MOBILE USA, INC.
95 prefixes in 206 · initial assignments from the NANPA CO code file, 09/17/2026
| NPA-NXX | Rate center | OCN | Assigned | Pooled |
|---|---|---|---|---|
| 206-226 | SEATTLE | 6529 | — | — |
| 206-227 | SEATTLE | 6529 | — | — |
| 206-228 | SEATTLE | 6529 | — | — |
| 206-229 | SEATTLE | 6529 | — | — |
| 206-234 | SEATTLE | 6529 | — | — |
| 206-235 | SEATTLE | 6529 | — | — |
| 206-250 | SEATTLE | 6529 | — | Yes |
| 206-251 | SEATTLE | 6529 | — | Yes |
| 206-255 | SEATTLE | 6529 | — | Yes |
| 206-261 | SEATTLE | 6529 | — | Yes |
| 206-271 | SEATTLE | 6529 | — | Yes |
| 206-280 | SEATTLE | 6529 | — | Yes |
| 206-290 | SEATTLE | 6529 | — | Yes |
| 206-293 | SEATTLE | 6529 | — | Yes |
| 206-294 | SEATTLE | 6529 | 2014-03-28 | Yes |
| 206-313 | SEATTLE | 6529 | — | — |
| 206-334 | SEATTLE | 6529 | — | — |
| 206-335 | SEATTLE | 6529 | — | — |
| 206-349 | SEATTLE | 6529 | — | — |
| 206-353 | SEATTLE | 6529 | — | — |
| 206-354 | SEATTLE | 6529 | — | — |
| 206-355 | SEATTLE | 6529 | — | — |
| 206-356 | SEATTLE | 6529 | — | — |
| 206-371 | SEATTLE | 6529 | — | Yes |
| 206-372 | SEATTLE | 6529 | — | — |
| 206-376 | SEATTLE | 6529 | — | Yes |
| 206-380 | SEATTLE | 6529 | — | Yes |
| 206-383 | SEATTLE | 6529 | — | — |
| 206-387 | SEATTLE | 6529 | — | Yes |
| 206-391 | SEATTLE | 6529 | — | Yes |
| 206-396 | SEATTLE | 6529 | — | Yes |
| 206-397 | SEATTLE | 6529 | — | Yes |
| 206-412 | SEATTLE | 6529 | — | — |
| 206-423 | SEATTLE | 6529 | — | Yes |
| 206-446 | SEATTLE | 6529 | 2007-04-26 | Yes |
| 206-453 | SEATTLE | 6529 | 2007-08-15 | Yes |
| 206-458 | SEATTLE | 6529 | 2008-05-13 | Yes |
| 206-466 | SEATTLE | 6529 | — | Yes |
| 206-468 | SEATTLE | 6529 | 2014-09-08 | Yes |
| 206-483 | SEATTLE | 6529 | 2016-05-24 | Yes |
| 206-488 | BAINBDG IS | 6529 | 2014-10-09 | Yes |
| 206-489 | SEATTLE | 6529 | 2012-12-20 | Yes |
| 206-501 | SEATTLE | 6529 | — | Yes |
| 206-503 | SEATTLE | 6529 | 2016-11-21 | Yes |
| 206-530 | SEATTLE | 6529 | 2019-01-23 | Yes |
| 206-532 | SEATTLE | 6529 | 2021-06-17 | Yes |
| 206-535 | SEATTLE | 6529 | 2011-08-09 | Yes |
| 206-537 | BAINBDG IS | 6529 | 2019-08-20 | Yes |
| 206-549 | SEATTLE | 6529 | 2012-10-04 | Yes |
| 206-551 | SEATTLE | 6529 | — | Yes |
| 206-571 | SEATTLE | 6529 | — | Yes |
| 206-579 | SEATTLE | 6529 | — | Yes |
| 206-586 | SEATTLE | 6529 | 2019-09-30 | Yes |
| 206-591 | BAINBDG IS | 6529 | 2019-05-20 | Yes |
| 206-608 | RICHMNDBCH | 6529 | 2023-11-20 | Yes |
| 206-609 | SEATTLE | 6529 | 2024-08-06 | Yes |
| 206-610 | RICHMNDBCH | 6529 | 2024-08-30 | Yes |
| 206-631 | SEATTLE | 6529 | 2007-03-29 | Yes |
| 206-637 | SEATTLE | 6529 | 2015-08-27 | Yes |
| 206-650 | SEATTLE | 6529 | — | Yes |
| 206-665 | SEATTLE | 6529 | 2018-09-20 | Yes |
| 206-679 | SEATTLE | 6529 | — | Yes |
| 206-683 | SEATTLE | 6529 | — | Yes |
| 206-698 | SEATTLE | 6529 | 2016-08-10 | Yes |
| 206-699 | SEATTLE | 6529 | 2024-09-16 | Yes |
| 206-710 | SEATTLE | 6529 | 2021-08-17 | Yes |
| 206-730 | SEATTLE | 6529 | — | Yes |
| 206-746 | BAINBDG IS | 6529 | 2022-01-07 | Yes |
| 206-751 | SEATTLE | 6529 | 2017-03-13 | Yes |
| 206-756 | SEATTLE | 6529 | 2021-09-27 | Yes |
| 206-769 | SEATTLE | 6529 | — | Yes |
| 206-771 | SEATTLE | 6529 | 2016-03-07 | Yes |
| 206-778 | SEATTLE | 6529 | — | — |
| 206-779 | SEATTLE | 6529 | — | — |
| 206-786 | SEATTLE | 6529 | — | Yes |
| 206-791 | SEATTLE | 6529 | 2021-11-03 | Yes |
| 206-793 | SEATTLE | 6529 | — | Yes |
| 206-807 | SEATTLE | 6529 | 2025-01-09 | Yes |
| 206-822 | BAINBDG IS | 6529 | 2015-03-12 | Yes |
| 206-841 | SEATTLE | 6529 | — | Yes |
| 206-843 | SEATTLE | 6529 | 2024-11-01 | Yes |
| 206-850 | SEATTLE | 6529 | — | Yes |
| 206-851 | SEATTLE | 6529 | — | Yes |
| 206-852 | SEATTLE | 6529 | — | Yes |
| 206-853 | SEATTLE | 6529 | — | Yes |
| 206-854 | SEATTLE | 6529 | — | Yes |
| 206-856 | SEATTLE | 6529 | — | Yes |
| 206-883 | SEATTLE | 6529 | — | Yes |
| 206-898 | SEATTLE | 6529 | — | Yes |
| 206-899 | BAINBDG IS | 6529 | 2015-11-06 | Yes |
| 206-931 | SEATTLE | 6529 | — | Yes |
| 206-939 | SEATTLE | 6529 | 2013-10-31 | Yes |
| 206-941 | SEATTLE | 6529 | — | Yes |
| 206-960 | SEATTLE | 6529 | 2015-09-25 | Yes |
| 206-981 | SEATTLE | 6529 | 2013-08-01 | 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.