NumberResearchRecent prefix assignments
5 prefixes assigned in the last 30 days · from the daily NANPA CO code file, 2026-04
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
Aug 2026
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Dec 2025
Nov 2025
Oct 2025
| Assigned | NPA-NXX | Assignee | OCN | Rate center | State |
|---|---|---|---|---|---|
| 2015-08-14 | 626-438 | T-MOBILE USA, INC. | 6529 | ALHAMBRA | CA |
| 2015-08-13 | 414-275 | T-MOBILE USA, INC. | 6529 | MILWAUKZN1 | WI |
| 2015-08-13 | 414-509 | T-MOBILE USA, INC. | 6529 | MILWAUKZN1 | WI |
| 2015-08-05 | 657-281 | T-MOBILE USA, INC. | 6529 | ORANGE | CA |
| 2015-08-05 | 909-314 | T-MOBILE USA, INC. | 6529 | S BERNDINO | CA |
| 2015-08-04 | 442-255 | T-MOBILE USA, INC. | 6529 | VICTORVL | CA |
| 2015-08-04 | 916-513 | T-MOBILE USA, INC. | 6529 | ELK GROVE | CA |
| 2015-08-04 | 971-336 | T-MOBILE USA, INC. | 6529 | PORTLAND | OR |
| 2015-08-03 | 415-619 | T-MOBILE USA, INC. | 6529 | BELVEDERE | CA |
| 2015-08-03 | 626-420 | T-MOBILE USA, INC. | 6529 | LA PUENTE | CA |
| 2015-08-03 | 661-576 | T-MOBILE USA, INC. | 6529 | PLDL PLDL | CA |
| 2015-08-03 | 747-283 | T-MOBILE USA, INC. | 6529 | BRBN BRBN | CA |
| 2015-07-31 | 513-918 | T-MOBILE USA, INC. | 6529 | CINCINNATI | OH |
| 2015-07-29 | 559-612 | T-MOBILE USA, INC. | 6529 | FRESNO | CA |
| 2015-07-27 | 951-475 | T-MOBILE USA, INC. | 6529 | CORONA | CA |
| 2015-07-24 | 951-420 | T-MOBILE USA, INC. | 6529 | PERRIS | CA |
| 2015-07-23 | 505-544 | T-MOBILE USA, INC. | 6529 | ALBUQURQUE | NM |
| 2015-07-23 | 619-484 | T-MOBILE USA, INC. | 6529 | CHULAVISTA | CA |
| 2015-07-21 | 312-358 | T-MOBILE USA, INC. | 6529 | CHICGOZN01 | IL |
| 2015-07-21 | 405-968 | T-MOBILE USA, INC. | 6529 | OKLA CITY | OK |
| 2015-07-21 | 830-410 | T-MOBILE USA, INC. | 6529 | HONDO | TX |
| 2015-07-21 | 872-315 | T-MOBILE USA, INC. | 6529 | CHICGOZN04 | IL |
| 2015-07-21 | 872-904 | T-MOBILE USA, INC. | 6529 | CHICGOZN07 | IL |
| 2015-07-21 | 937-951 | T-MOBILE USA, INC. | 6529 | DAYTON | OH |
| 2015-07-20 | 331-321 | T-MOBILE USA, INC. | 6529 | AURORA | IL |
| 2015-07-16 | 559-653 | T-MOBILE USA, INC. | 6529 | FOWLER | CA |
| 2015-07-15 | 682-331 | T-MOBILE USA, INC. | 6529 | ARLINGTON | TX |
| 2015-07-13 | 747-255 | T-MOBILE USA, INC. | 6529 | LACRSCENTA | CA |
| 2015-07-10 | 510-820 | T-MOBILE USA, INC. | 6529 | OKLD TRNID | CA |
| 2015-07-07 | 469-655 | T-MOBILE USA, INC. | 6529 | FORNEY | TX |
| 2015-07-06 | 707-805 | T-MOBILE USA, INC. | 6529 | VALLEJO | CA |
| 2015-07-02 | 424-527 | T-MOBILE USA, INC. | 6529 | BEVERLYHLS | CA |
| 2015-07-02 | 559-330 | T-MOBILE USA, INC. | 6529 | MADERA | CA |
| 2015-07-02 | 916-750 | T-MOBILE USA, INC. | 6529 | SCRM NORTH | CA |
| 2015-07-01 | 657-275 | T-MOBILE USA, INC. | 6529 | PLACENTIA | CA |
| 2015-06-26 | 224-258 | T-MOBILE USA, INC. | 6529 | ARLIGTNHTS | IL |
| 2015-06-26 | 312-468 | T-MOBILE USA, INC. | 6529 | CHICGOZN01 | IL |
| 2015-06-26 | 312-536 | T-MOBILE USA, INC. | 6529 | CHICGOZN01 | IL |
| 2015-06-26 | 708-573 | T-MOBILE USA, INC. | 6529 | CHICAGOHTS | IL |
| 2015-06-25 | 331-814 | T-MOBILE USA, INC. | 6529 | NAPERVILLE | IL |
| 2015-06-25 | 513-996 | T-MOBILE USA, INC. | 6529 | CINCINNATI | OH |
| 2015-06-25 | 708-517 | T-MOBILE USA, INC. | 6529 | HARVEY | IL |
| 2015-06-22 | 510-696 | T-MOBILE USA, INC. | 6529 | OKLD FRTVL | CA |
| 2015-06-22 | 559-571 | T-MOBILE USA, INC. | 6529 | VISALIA | CA |
| 2015-06-19 | 559-885 | T-MOBILE USA, INC. | 6529 | CARUTHERS | CA |
| 2015-06-16 | 619-762 | T-MOBILE USA, INC. | 6529 | CORONADO | CA |
| 2015-06-12 | 219-806 | T-MOBILE USA, INC. | 6529 | GARY | IN |
| 2015-06-11 | 405-982 | T-MOBILE USA, INC. | 6529 | OKLA CITY | OK |
| 2015-06-11 | 440-412 | T-MOBILE USA, INC. | 6529 | ELYRIA | OH |
| 2015-06-11 | 562-583 | T-MOBILE USA, INC. | 6529 | ALAMITOS | CA |
Source: NANPA CO Code Assignments (Utilized, All States, Public), file date 2026-04 — Tier A primary source, refreshed on every import. Viewing is free; bulk downloads require a membership.