NumberResearchRecent prefix assignments
5 prefixes assigned in the last 30 days · from the daily NANPA CO code file, 09/18/2026
Which carriers received which NPA-NXX prefixes, and where. Assignments are initial assignments from NANPA records — because of number portability, the current serving carrier of individual numbers may differ. For finer-grained activity, see the thousands-block view above.
Most active assignees, last 30 days
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| Assigned | NPA-NXX | Assignee | OCN | Rate center | State |
|---|---|---|---|---|---|
| 937-305 | T-MOBILE USA, INC. | 6529 | DAYTON | OH | |
| 937-313 | T-MOBILE USA, INC. | 6529 | DAYTON | OH | |
| 937-321 | T-MOBILE USA, INC. | 6529 | DAYTON | OH | |
| 937-360 | T-MOBILE USA, INC. | 6529 | SPRINGFLD | OH | |
| 937-361 | T-MOBILE USA, INC. | 6529 | DAYTON | OH | |
| 937-367 | T-MOBILE USA, INC. | 6529 | DAYTON | OH | |
| 937-369 | T-MOBILE USA, INC. | 6529 | DAYTON | OH | |
| 937-389 | T-MOBILE USA, INC. | 6529 | DAYTON | OH | |
| 937-422 | T-MOBILE USA, INC. | 6529 | DAYTON | OH | |
| 937-459 | T-MOBILE USA, INC. | 6529 | GREENVILLE | OH | |
| 937-467 | T-MOBILE USA, INC. | 6529 | GREENVILLE | OH | |
| 937-469 | T-MOBILE USA, INC. | 6529 | DAYTON | OH | |
| 937-483 | T-MOBILE USA, INC. | 6529 | GEORGETOWN | OH | |
| 937-524 | T-MOBILE USA, INC. | 6529 | TROY | OH | |
| 937-527 | T-MOBILE USA, INC. | 6529 | WILMINGTON | OH | |
| 937-532 | T-MOBILE USA, INC. | 6529 | XENIA | OH | |
| 937-533 | T-MOBILE USA, INC. | 6529 | EATON | OH | |
| 937-536 | T-MOBILE USA, INC. | 6529 | SPRINGFLD | OH | |
| 937-541 | T-MOBILE USA, INC. | 6529 | PIQUA | OH | |
| 937-543 | T-MOBILE USA, INC. | 6529 | NEWCARLISL | OH | |
| 937-554 | T-MOBILE USA, INC. | 6529 | DAYTON | OH | |
| 937-603 | T-MOBILE USA, INC. | 6529 | DAYTON | OH | |
| 937-604 | T-MOBILE USA, INC. | 6529 | DAYTON | OH | |
| 937-605 | T-MOBILE USA, INC. | 6529 | SPRINGFLD | OH | |
| 937-606 | T-MOBILE USA, INC. | 6529 | PIQUA | OH | |
| 937-608 | T-MOBILE USA, INC. | 6529 | DAYTON | OH | |
| 937-626 | T-MOBILE USA, INC. | 6529 | DAYTON | OH | |
| 937-673 | T-MOBILE USA, INC. | 6529 | DAYTON | OH | |
| 937-674 | T-MOBILE USA, INC. | 6529 | DAYTON | OH | |
| 937-829 | T-MOBILE USA, INC. | 6529 | DAYTON | OH | |
| 937-830 | T-MOBILE USA, INC. | 6529 | DAYTON | OH | |
| 937-831 | T-MOBILE USA, INC. | 6529 | SPRINGFLD | OH | |
| 937-838 | T-MOBILE USA, INC. | 6529 | DAYTON | OH | |
| 937-869 | T-MOBILE USA, INC. | 6529 | URBANA | OH | |
| 937-875 | T-MOBILE USA, INC. | 6529 | TROY | OH | |
| 940-224 | T-MOBILE USA, INC. | 6529 | WICHITAFLS | TX | |
| 940-594 | T-MOBILE USA, INC. | 6529 | DENTON | TX | |
| 940-595 | T-MOBILE USA, INC. | 6529 | DENTON | TX | |
| 940-597 | T-MOBILE USA, INC. | 6529 | DENTON | TX | |
| 940-642 | T-MOBILE USA, INC. | 6529 | WICHITAFLS | TX | |
| 940-859 | T-MOBILE USA, INC. | 6529 | MINERLWLLS | TX | |
| 945-291 | T-MOBILE USA, INC. | 6529 | FRISCO | TX | |
| 949-201 | T-MOBILE USA, INC. | 6529 | CAPITRNVLY | CA | |
| 949-228 | T-MOBILE USA, INC. | 6529 | LAGUNA BCH | CA | |
| 949-235 | T-MOBILE USA, INC. | 6529 | LAGUNA BCH | CA | |
| 949-278 | T-MOBILE USA, INC. | 6529 | IRVINE | CA | |
| 949-279 | T-MOBILE USA, INC. | 6529 | IRVINE | CA | |
| 949-283 | T-MOBILE USA, INC. | 6529 | IRVINE | CA | |
| 949-289 | T-MOBILE USA, INC. | 6529 | CAPITRNVLY | CA | |
| 949-302 | T-MOBILE USA, INC. | 6529 | IRVINE | CA |
Source: NANPA CO Code Assignments (Utilized, All States, Public), file date 09/18/2026 — Tier A primary source, refreshed on every import. Viewing is free; bulk downloads require a membership.