T-MOBILE USA, INC.
7 prefixes in 350 · initial assignments from the NANPA CO code file, 09/17/2026
| NPA-NXX | Rate center | OCN | Assigned | Pooled |
|---|---|---|---|---|
| 350-204 | ATWATER | 6529 | 2023-01-11 | Yes |
| 350-217 | STOCKTON | 6529 | 2024-01-11 | Yes |
| 350-218 | MANTECA | 6529 | 2024-01-19 | Yes |
| 350-233 | ATWATER | 6529 | 2024-10-21 | Yes |
| 350-236 | JAMESTOWN | 6529 | 2024-12-06 | Yes |
| 350-247 | LODI | 6529 | 2025-08-20 | Yes |
| 350-248 | ATWATER | 6529 | 2025-08-20 | 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.