T-MOBILE USA, INC.
30 prefixes in 920 · initial assignments from the NANPA CO code file, 09/17/2026
| NPA-NXX | Rate center | OCN | Assigned | Pooled |
|---|---|---|---|---|
| 920-203 | OSHKOSH | 6529 | — | Yes |
| 920-205 | APPLETON | 6529 | — | Yes |
| 920-217 | GREEN BAY | 6529 | — | Yes |
| 920-222 | LAKE MILLS | 6529 | — | Yes |
| 920-251 | FONDDU LAC | 6529 | — | Yes |
| 920-256 | STURGEONBY | 6529 | 2001-08-02 | Yes |
| 920-265 | GREEN BAY | 6529 | 2001-08-09 | Yes |
| 920-277 | APPLETON | 6529 | 2001-04-09 | Yes |
| 920-297 | LAKE MILLS | 6529 | — | Yes |
| 920-313 | LOMIRA | 6529 | 2001-04-18 | Yes |
| 920-316 | OOSTBURG | 6529 | 2001-04-18 | Yes |
| 920-318 | BEAVER DAM | 6529 | — | Yes |
| 920-371 | GREEN BAY | 6529 | — | Yes |
| 920-374 | MANITOWOC | 6529 | — | Yes |
| 920-375 | FONDDU LAC | 6529 | — | Yes |
| 920-571 | MANITOWOC | 6529 | — | Yes |
| 920-580 | OSHKOSH | 6529 | 2022-04-29 | Yes |
| 920-603 | STURGEONBY | 6529 | 2005-12-03 | Yes |
| 920-605 | JEFFERSON | 6529 | — | Yes |
| 920-681 | MANITOWOC | 6529 | — | Yes |
| 920-701 | LOMIRA | 6529 | 2021-08-04 | Yes |
| 920-714 | APPLETON | 6529 | 2022-02-09 | Yes |
| 920-747 | JEFFERSON | 6529 | — | Yes |
| 920-786 | HORICON | 6529 | — | Yes |
| 920-791 | BEAVER DAM | 6529 | — | Yes |
| 920-815 | APPLETON | 6529 | 2014-05-16 | Yes |
| 920-903 | APPLETON | 6529 | 2010-08-06 | Yes |
| 920-939 | APPLETON | 6529 | 2015-03-06 | Yes |
| 920-941 | WATERTOWN | 6529 | — | Yes |
| 920-957 | FONDDU LAC | 6529 | 2024-02-28 | 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.