T-MOBILE USA, INC.
25 prefixes in 563 · initial assignments from the NANPA CO code file, 09/17/2026
| NPA-NXX | Rate center | OCN | Assigned | Pooled |
|---|---|---|---|---|
| 563-213 | DUBUQUE | 6529 | — | Yes |
| 563-307 | DUBUQUE | 6529 | 2022-01-04 | Yes |
| 563-318 | TIPTON | 6529 | 2022-08-25 | Yes |
| 563-366 | CRESCO | 6529 | 2022-04-28 | Yes |
| 563-396 | DAVENPORT | 6529 | 2018-02-12 | Yes |
| 563-495 | DUBUQUE | 6529 | — | — |
| 563-505 | DAVENPORT | 6529 | — | Yes |
| 563-506 | MUSCATINE | 6529 | — | Yes |
| 563-516 | ELKADER | 6529 | — | Yes |
| 563-517 | DECORAH | 6529 | — | Yes |
| 563-518 | WEST UNION | 6529 | — | Yes |
| 563-528 | DAVENPORT | 6529 | 2001-10-30 | Yes |
| 563-529 | DAVENPORT | 6529 | — | Yes |
| 563-537 | MONONA | 6529 | 2006-11-16 | — |
| 563-554 | MUSCATINE | 6529 | — | Yes |
| 563-559 | CLINTON | 6529 | — | Yes |
| 563-564 | DUBUQUE | 6529 | — | Yes |
| 563-570 | DAVENPORT | 6529 | — | — |
| 563-571 | MUSCATINE | 6529 | — | — |
| 563-579 | DAVENPORT | 6529 | — | — |
| 563-593 | CLINTON | 6529 | — | — |
| 563-650 | DAVENPORT | 6529 | — | Yes |
| 563-676 | DAVENPORT | 6529 | 2002-01-10 | Yes |
| 563-772 | CASCADE | 6529 | 2025-03-31 | Yes |
| 563-889 | TIPTON | 6529 | — | — |
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.