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 |
|---|---|---|---|---|---|
| 808-478 | T-MOBILE USA, INC. | 6529 | HONOLULU | HI | |
| 808-479 | T-MOBILE USA, INC. | 6529 | HONOLULU | HI | |
| 808-557 | T-MOBILE USA, INC. | 6529 | HILO | HI | |
| 808-561 | T-MOBILE USA, INC. | 6529 | HONOLULU | HI | |
| 808-647 | T-MOBILE USA, INC. | 6529 | LIHUE | HI | |
| 808-741 | T-MOBILE USA, INC. | 6529 | HONOLULU | HI | |
| 808-778 | T-MOBILE USA, INC. | 6529 | HONOLULU | HI | |
| 808-779 | T-MOBILE USA, INC. | 6529 | HONOLULU | HI | |
| 808-780 | T-MOBILE USA, INC. | 6529 | HONOLULU | HI | |
| 808-781 | T-MOBILE USA, INC. | 6529 | HONOLULU | HI | |
| 808-782 | T-MOBILE USA, INC. | 6529 | HONOLULU | HI | |
| 808-783 | T-MOBILE USA, INC. | 6529 | HONOLULU | HI | |
| 808-864 | T-MOBILE USA, INC. | 6529 | HONOLULU | HI | |
| 808-870 | T-MOBILE USA, INC. | 6529 | WAILUKU | HI | |
| 808-960 | T-MOBILE USA, INC. | 6529 | HILO | HI | |
| 808-989 | T-MOBILE USA, INC. | 6529 | HILO | HI | |
| 808-990 | T-MOBILE USA, INC. | 6529 | HILO | HI | |
| 812-221 | T-MOBILE USA, INC. | 6529 | LAWRENCEBG | IN | |
| 812-290 | T-MOBILE USA, INC. | 6529 | LAWRENCEBG | IN | |
| 814-434 | T-MOBILE USA, INC. | 6529 | ERIE | PA | |
| 814-488 | T-MOBILE USA, INC. | 6529 | FRANKLIN | PA | |
| 814-504 | T-MOBILE USA, INC. | 6529 | ERIE | PA | |
| 814-622 | T-MOBILE USA, INC. | 6529 | GIRARD | PA | |
| 814-790 | T-MOBILE USA, INC. | 6529 | ERIE | PA | |
| 814-853 | T-MOBILE USA, INC. | 6529 | MEADVILLE | PA | |
| 815-212 | T-MOBILE USA, INC. | 6529 | JOLIET | IL | |
| 815-260 | T-MOBILE USA, INC. | 6529 | JOLIET | IL | |
| 815-295 | T-MOBILE USA, INC. | 6529 | KANKAKEE | IL | |
| 815-302 | T-MOBILE USA, INC. | 6529 | JOLIET | IL | |
| 815-378 | T-MOBILE USA, INC. | 6529 | ROCKFORD | IL | |
| 815-405 | T-MOBILE USA, INC. | 6529 | JOLIET | IL | |
| 815-482 | T-MOBILE USA, INC. | 6529 | WOODSTOCK | IL | |
| 815-483 | T-MOBILE USA, INC. | 6529 | JOLIET | IL | |
| 815-505 | T-MOBILE USA, INC. | 6529 | ROCKFORD | IL | |
| 815-509 | T-MOBILE USA, INC. | 6529 | ROCKFORD | IL | |
| 815-519 | T-MOBILE USA, INC. | 6529 | ROCKFORD | IL | |
| 815-530 | T-MOBILE USA, INC. | 6529 | JOLIET | IL | |
| 815-540 | T-MOBILE USA, INC. | 6529 | ROCKFORD | IL | |
| 815-549 | T-MOBILE USA, INC. | 6529 | KANKAKEE | IL | |
| 815-593 | T-MOBILE USA, INC. | 6529 | DE KALB | IL | |
| 815-621 | T-MOBILE USA, INC. | 6529 | ROCKFORD | IL | |
| 815-670 | T-MOBILE USA, INC. | 6529 | ROCKFORD | IL | |
| 815-690 | T-MOBILE USA, INC. | 6529 | JOLIET | IL | |
| 815-693 | T-MOBILE USA, INC. | 6529 | JOLIET | IL | |
| 815-790 | T-MOBILE USA, INC. | 6529 | WOODSTOCK | IL | |
| 815-823 | T-MOBILE USA, INC. | 6529 | JOLIET | IL | |
| 817-401 | T-MOBILE USA, INC. | 6529 | ARLINGTON | TX | |
| 817-501 | T-MOBILE USA, INC. | 6529 | ARLINGTON | TX | |
| 817-521 | T-MOBILE USA, INC. | 6529 | ARLINGTON | TX | |
| 817-538 | T-MOBILE USA, INC. | 6529 | ARLINGTON | TX |
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.