T-MOBILE USA, INC.
28 prefixes in 775 · initial assignments from the NANPA CO code file, 09/17/2026
| NPA-NXX | Rate center | OCN | Assigned | Pooled |
|---|---|---|---|---|
| 775-203 | RENO | 6529 | 2011-11-10 | Yes |
| 775-219 | RENO | 6529 | 2001-03-23 | Yes |
| 775-221 | RENO | 6529 | — | Yes |
| 775-232 | RENO | 6529 | 2001-05-09 | Yes |
| 775-247 | RENO | 6529 | — | Yes |
| 775-250 | RENO | 6529 | — | Yes |
| 775-287 | RENO | 6529 | 2001-09-19 | Yes |
| 775-291 | CARSONCITY | 6529 | 2002-08-27 | Yes |
| 775-292 | GARDNERVL | 6529 | 2002-10-07 | Yes |
| 775-294 | FALLON | 6529 | 2002-07-23 | Yes |
| 775-300 | RENO | 6529 | 2016-06-17 | Yes |
| 775-338 | RENO | 6529 | 2002-03-26 | — |
| 775-350 | CARSONCITY | 6529 | — | Yes |
| 775-389 | ELKO | 6529 | 2007-04-30 | Yes |
| 775-400 | CARSONCITY | 6529 | 2010-12-02 | Yes |
| 775-440 | RENO | 6529 | 2014-07-17 | Yes |
| 775-450 | GARDNERVL | 6529 | — | Yes |
| 775-461 | CARSONCITY | 6529 | 2008-01-17 | Yes |
| 775-470 | RENO | 6529 | 2014-10-09 | Yes |
| 775-471 | SWEETWATER | 6529 | 2021-05-19 | Yes |
| 775-495 | GARDNERVL | 6529 | 2022-07-13 | Yes |
| 775-515 | CARSONCITY | 6529 | 2016-01-19 | Yes |
| 775-523 | SWEETWATER | 6529 | 2024-01-19 | Yes |
| 775-585 | ELKO | 6529 | 2026-01-09 | Yes |
| 775-592 | SWEETWATER | 6529 | 2026-01-09 | Yes |
| 775-690 | CARSONCITY | 6529 | — | Yes |
| 775-691 | CARSONCITY | 6529 | — | Yes |
| 775-745 | RENO | 6529 | — | 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.