T-MOBILE USA, INC.
7 prefixes in 274 · initial assignments from the NANPA CO code file, 09/17/2026
| NPA-NXX | Rate center | OCN | Assigned | Pooled |
|---|---|---|---|---|
| 274-201 | NEW LONDON | 6529 | 2024-11-12 | Yes |
| 274-203 | ALGOMA | 6529 | 2025-01-15 | Yes |
| 274-205 | COLUMBUS | 6529 | 2025-01-16 | Yes |
| 274-206 | LUXEMBURG | 6529 | 2025-01-22 | Yes |
| 274-208 | NESHKORO | 6529 | 2025-01-22 | Yes |
| 274-209 | OMRO | 6529 | 2025-01-22 | Yes |
| 274-210 | RIPON | 6529 | 2025-01-23 | 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.