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
Aug 2026
Jul 2026
Jun 2026
May 2026
Apr 2026
Mar 2026
Feb 2026
Jan 2026
Dec 2025
Nov 2025
Oct 2025
| Assigned | NPA-NXX | Assignee | OCN | Rate center | State |
|---|---|---|---|---|---|
| 2024-08-30 | 858-407 | T-MOBILE USA, INC. | 6529 | CHULAVISTA | CA |
| 2024-08-29 | 213-853 | T-MOBILE USA, INC. | 6529 | LSAN DA 13 | CA |
| 2024-08-29 | 213-857 | T-MOBILE USA, INC. | 6529 | LSAN DA 12 | CA |
| 2024-08-29 | 442-470 | T-MOBILE USA, INC. | 6529 | PALMDESERT | CA |
| 2024-08-29 | 669-349 | T-MOBILE USA, INC. | 6529 | SNJS NORTH | CA |
| 2024-08-28 | 986-285 | T-MOBILE USA, INC. | 6529 | SANDPOINT | ID |
| 2024-08-27 | 440-404 | T-MOBILE USA, INC. | 6529 | ASHTABULA | OH |
| 2024-08-21 | 219-385 | T-MOBILE USA, INC. | 6529 | HAMMOND | IN |
| 2024-08-21 | 224-614 | T-MOBILE USA, INC. | 6529 | ARLIGTNHTS | IL |
| 2024-08-20 | 213-854 | T-MOBILE USA, INC. | 6529 | LSAN DA 07 | CA |
| 2024-08-20 | 369-218 | T-MOBILE USA, INC. | 6529 | FRFLD-SUIS | CA |
| 2024-08-20 | 559-913 | T-MOBILE USA, INC. | 6529 | VISALIA | CA |
| 2024-08-20 | 559-914 | T-MOBILE USA, INC. | 6529 | CLOVIS | CA |
| 2024-08-20 | 747-371 | T-MOBILE USA, INC. | 6529 | LACRSCENTA | CA |
| 2024-08-20 | 949-821 | T-MOBILE USA, INC. | 6529 | CAPITRNVLY | CA |
| 2024-08-16 | 213-849 | T-MOBILE USA, INC. | 6529 | LSAN DA 01 | CA |
| 2024-08-16 | 213-851 | T-MOBILE USA, INC. | 6529 | LSAN DA 04 | CA |
| 2024-08-16 | 213-852 | T-MOBILE USA, INC. | 6529 | LSAN DA 11 | CA |
| 2024-08-16 | 564-259 | T-MOBILE USA, INC. | 6529 | ABERDEEN | WA |
| 2024-08-15 | 945-347 | T-MOBILE USA, INC. | 6529 | DE SOTO | TX |
| 2024-08-13 | 515-691 | T-MOBILE USA, INC. | 6529 | NEVADA | IA |
| 2024-08-08 | 567-461 | T-MOBILE USA, INC. | 6529 | ASHLAND | OH |
| 2024-08-06 | 206-609 | T-MOBILE USA, INC. | 6529 | SEATTLE | WA |
| 2024-08-06 | 213-848 | T-MOBILE USA, INC. | 6529 | LSAN DA 09 | CA |
| 2024-08-06 | 562-751 | T-MOBILE USA, INC. | 6529 | LONG BEACH | CA |
| 2024-08-06 | 657-760 | T-MOBILE USA, INC. | 6529 | HUNTITNBCH | CA |
| 2024-08-06 | 681-543 | T-MOBILE USA, INC. | 6529 | SUMMERSVL | WV |
| 2024-07-31 | 224-224 | T-MOBILE USA, INC. | 6529 | DESPLAINES | IL |
| 2024-07-31 | 641-674 | T-MOBILE USA, INC. | 6529 | CENTERVL | IA |
| 2024-07-30 | 213-846 | T-MOBILE USA, INC. | 6529 | LSAN DA 05 | CA |
| 2024-07-30 | 385-588 | T-MOBILE USA, INC. | 6529 | MURRAY | UT |
| 2024-07-30 | 424-514 | T-MOBILE USA, INC. | 6529 | W ANGELES | CA |
| 2024-07-30 | 628-308 | T-MOBILE USA, INC. | 6529 | SNFC MT-EV | CA |
| 2024-07-30 | 628-309 | T-MOBILE USA, INC. | 6529 | SNFC CNTRL | CA |
| 2024-07-30 | 657-754 | T-MOBILE USA, INC. | 6529 | GARDEN GRV | CA |
| 2024-07-30 | 747-370 | T-MOBILE USA, INC. | 6529 | SNFN GRHL | CA |
| 2024-07-30 | 840-262 | T-MOBILE USA, INC. | 6529 | ARROWHEAD | CA |
| 2024-07-30 | 949-820 | T-MOBILE USA, INC. | 6529 | NEWPORTBCH | CA |
| 2024-07-26 | 945-342 | T-MOBILE USA, INC. | 6529 | IRVING | TX |
| 2024-07-24 | 630-763 | T-MOBILE USA, INC. | 6529 | ELMHURST | IL |
| 2024-07-18 | 319-496 | T-MOBILE USA, INC. | 6529 | MONTICELLO | IA |
| 2024-07-18 | 515-796 | T-MOBILE USA, INC. | 6529 | JEFFERSON | IA |
| 2024-07-18 | 641-657 | T-MOBILE USA, INC. | 6529 | HAMPTON | IA |
| 2024-07-16 | 562-643 | T-MOBILE USA, INC. | 6529 | ALAMITOS | CA |
| 2024-07-12 | 213-843 | T-MOBILE USA, INC. | 6529 | LSAN DA 10 | CA |
| 2024-07-12 | 213-845 | T-MOBILE USA, INC. | 6529 | LSAN DA 11 | CA |
| 2024-07-12 | 530-983 | T-MOBILE USA, INC. | 6529 | REDDING | CA |
| 2024-07-12 | 572-242 | T-MOBILE USA, INC. | 6529 | SHAWNEE | OK |
| 2024-07-12 | 725-339 | T-MOBILE USA, INC. | 6529 | LAS VEGAS | NV |
| 2024-07-12 | 747-368 | T-MOBILE USA, INC. | 6529 | NO HOLLYWD | 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.