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
New assignments by month
Sep 2026
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Oct 2025
| Assigned | NPA-NXX | Assignee | OCN | Rate center | State |
|---|---|---|---|---|---|
| 2022-09-27 | 737-335 | T-MOBILE USA, INC. | 6529 | SAN MARCOS | TX |
| 2022-09-26 | 224-486 | T-MOBILE USA, INC. | 6529 | ARLIGTNHTS | IL |
| 2022-09-20 | 385-490 | T-MOBILE USA, INC. | 6529 | SALT LAKE | UT |
| 2022-09-20 | 480-913 | T-MOBILE USA, INC. | 6529 | PHOENIX | AZ |
| 2022-09-20 | 505-532 | T-MOBILE USA, INC. | 6529 | ALBUQURQUE | NM |
| 2022-09-20 | 520-660 | T-MOBILE USA, INC. | 6529 | CASAGRANDE | AZ |
| 2022-09-20 | 564-227 | T-MOBILE USA, INC. | 6529 | VANCOUVER | WA |
| 2022-09-20 | 623-320 | T-MOBILE USA, INC. | 6529 | PHOENIX | AZ |
| 2022-09-20 | 650-705 | T-MOBILE USA, INC. | 6529 | MT VIEW | CA |
| 2022-09-20 | 657-618 | T-MOBILE USA, INC. | 6529 | SANTA ANA | CA |
| 2022-09-20 | 657-625 | T-MOBILE USA, INC. | 6529 | CYPRESS | CA |
| 2022-09-20 | 720-964 | T-MOBILE USA, INC. | 6529 | LONGMONT | CO |
| 2022-09-20 | 949-731 | T-MOBILE USA, INC. | 6529 | NEWPORTBCH | CA |
| 2022-09-16 | 319-508 | T-MOBILE USA, INC. | 6529 | KEOSAUQUA | IA |
| 2022-09-16 | 515-916 | T-MOBILE USA, INC. | 6529 | AMES | IA |
| 2022-09-15 | 872-319 | T-MOBILE USA, INC. | 6529 | CHICGOZN04 | IL |
| 2022-09-12 | 725-285 | T-MOBILE USA, INC. | 6529 | LAS VEGAS | NV |
| 2022-09-02 | 661-594 | T-MOBILE USA, INC. | 6529 | SHAFTER | CA |
| 2022-09-02 | 682-390 | T-MOBILE USA, INC. | 6529 | ARLINGTON | TX |
| 2022-09-02 | 682-391 | T-MOBILE USA, INC. | 6529 | ARLINGTON | TX |
| 2022-09-02 | 682-392 | T-MOBILE USA, INC. | 6529 | ARLINGTON | TX |
| 2022-09-02 | 840-217 | T-MOBILE USA, INC. | 6529 | FONTANA | CA |
| 2022-09-02 | 951-613 | T-MOBILE USA, INC. | 6529 | PERRIS | CA |
| 2022-08-29 | 262-341 | T-MOBILE USA, INC. | 6529 | ALLENTON | WI |
| 2022-08-29 | 414-381 | T-MOBILE USA, INC. | 6529 | MILWAUKZN4 | WI |
| 2022-08-25 | 563-318 | T-MOBILE USA, INC. | 6529 | TIPTON | IA |
| 2022-08-25 | 945-267 | T-MOBILE USA, INC. | 6529 | FRISCO | TX |
| 2022-08-25 | 945-268 | T-MOBILE USA, INC. | 6529 | FRISCO | TX |
| 2022-08-24 | 479-490 | T-MOBILE USA, INC. | 6529 | ALMA | AR |
| 2022-08-24 | 773-461 | T-MOBILE USA, INC. | 6529 | CHICGOZN02 | IL |
| 2022-08-24 | 970-307 | T-MOBILE USA, INC. | 6529 | GRAND JCT | CO |
| 2022-08-18 | 425-547 | T-MOBILE USA, INC. | 6529 | RENTON | WA |
| 2022-08-15 | 424-482 | T-MOBILE USA, INC. | 6529 | SAN PEDRO | CA |
| 2022-08-12 | 253-308 | T-MOBILE USA, INC. | 6529 | AUBURN | WA |
| 2022-08-12 | 279-226 | T-MOBILE USA, INC. | 6529 | RSVL MAIN | CA |
| 2022-08-12 | 331-289 | T-MOBILE USA, INC. | 6529 | HINSDALE | IL |
| 2022-08-12 | 424-470 | T-MOBILE USA, INC. | 6529 | BEVERLYHLS | CA |
| 2022-08-12 | 626-640 | T-MOBILE USA, INC. | 6529 | LA PUENTE | CA |
| 2022-08-12 | 657-615 | T-MOBILE USA, INC. | 6529 | ANAHEIM | CA |
| 2022-08-12 | 682-387 | T-MOBILE USA, INC. | 6529 | GRANBURY | TX |
| 2022-08-12 | 682-389 | T-MOBILE USA, INC. | 6529 | GRANBURY | TX |
| 2022-08-12 | 720-786 | T-MOBILE USA, INC. | 6529 | DENVER | CO |
| 2022-08-12 | 830-289 | T-MOBILE USA, INC. | 6529 | UVALDE | TX |
| 2022-08-12 | 840-213 | T-MOBILE USA, INC. | 6529 | REDLANDS | CA |
| 2022-08-12 | 840-214 | T-MOBILE USA, INC. | 6529 | MARSHALL | CA |
| 2022-08-12 | 928-435 | T-MOBILE USA, INC. | 6529 | BULLHEADCY | AZ |
| 2022-08-09 | 945-264 | T-MOBILE USA, INC. | 6529 | GRANDPRARI | TX |
| 2022-08-09 | 945-265 | T-MOBILE USA, INC. | 6529 | GRANDPRARI | TX |
| 2022-08-09 | 945-266 | T-MOBILE USA, INC. | 6529 | GRANDPRARI | TX |
| 2022-07-28 | 262-301 | T-MOBILE USA, INC. | 6529 | RACINE | WI |
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.