T-MOBILE USA, INC.
39 prefixes in 319 · initial assignments from the NANPA CO code file, 09/17/2026
| NPA-NXX | Rate center | OCN | Assigned | Pooled |
|---|---|---|---|---|
| 319-202 | CEDAR RPDS | 6529 | 2004-05-13 | — |
| 319-209 | BURLINGTON | 6529 | 2001-04-10 | Yes |
| 319-210 | CEDAR RPDS | 6529 | 2002-02-12 | Yes |
| 319-241 | CEDAR RPDS | 6529 | 2002-03-07 | — |
| 319-280 | KEOSAUQUA | 6529 | 2018-07-23 | Yes |
| 319-288 | KEOSAUQUA | 6529 | 2005-11-11 | Yes |
| 319-300 | WATERLOO | 6529 | 2018-08-27 | Yes |
| 319-340 | WATERLOO | 6529 | 2022-07-27 | Yes |
| 319-412 | CEDAR RPDS | 6529 | 2018-02-12 | Yes |
| 319-414 | KEOSAUQUA | 6529 | 2023-08-18 | Yes |
| 319-419 | WAVERLY | 6529 | 2018-03-09 | Yes |
| 319-431 | CEDAR RPDS | 6529 | — | Yes |
| 319-457 | BURLINGTON | 6529 | — | — |
| 319-471 | IOWA CITY | 6529 | — | Yes |
| 319-473 | KEOKUK | 6529 | 2001-05-30 | — |
| 319-486 | WATERLOO | 6529 | 2011-04-28 | Yes |
| 319-493 | WATERLOO | 6529 | — | Yes |
| 319-496 | MONTICELLO | 6529 | 2024-07-18 | Yes |
| 319-499 | IOWA CITY | 6529 | 2011-03-25 | Yes |
| 319-501 | BRIGHTON | 6529 | 2024-10-04 | Yes |
| 319-504 | WATERLOO | 6529 | — | Yes |
| 319-508 | KEOSAUQUA | 6529 | 2022-09-16 | Yes |
| 319-509 | OELWEIN | 6529 | — | — |
| 319-521 | CEDAR RPDS | 6529 | — | — |
| 319-533 | CEDAR RPDS | 6529 | — | Yes |
| 319-537 | MTPLEASANT | 6529 | 2001-05-30 | — |
| 319-548 | WASHINGTON | 6529 | — | — |
| 319-554 | BRIGHTON | 6529 | 2025-09-04 | Yes |
| 319-561 | FT MADISON | 6529 | 2001-05-30 | — |
| 319-594 | IOWA CITY | 6529 | — | Yes |
| 319-601 | BURLINGTON | 6529 | 2001-02-09 | Yes |
| 319-621 | IOWA CITY | 6529 | — | Yes |
| 319-631 | IOWA CITY | 6529 | — | Yes |
| 319-651 | CEDAR RPDS | 6529 | — | Yes |
| 319-821 | ANAMOSA | 6529 | — | — |
| 319-936 | IOWA CITY | 6529 | — | — |
| 319-961 | WATERLOO | 6529 | — | — |
| 319-981 | CEDAR RPDS | 6529 | — | — |
| 319-990 | BRIGHTON | 6529 | 2025-03-31 | 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.