NumberResearchRecent prefix assignments
13 prefixes assigned in January 2026 · 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, January 2026
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| Assigned | NPA-NXX | Assignee | OCN | Rate center | State |
|---|---|---|---|---|---|
| 2026-01-22 | 562-870 | T-MOBILE USA, INC. | 6529 | ALAMITOS | CA |
| 2026-01-20 | 253-443 | T-MOBILE USA, INC. | 6529 | AUBURN | WA |
| 2026-01-16 | 442-496 | T-MOBILE USA, INC. | 6529 | BRAWLEY | CA |
| 2026-01-12 | 224-679 | T-MOBILE USA, INC. | 6529 | ARLIGTNHTS | IL |
| 2026-01-09 | 520-765 | T-MOBILE USA, INC. | 6529 | CASAGRANDE | AZ |
| 2026-01-09 | 775-585 | T-MOBILE USA, INC. | 6529 | ELKO | NV |
| 2026-01-09 | 775-592 | T-MOBILE USA, INC. | 6529 | SWEETWATER | NV |
| 2026-01-08 | 425-592 | T-MOBILE USA, INC. | 6529 | BELLEVUE | WA |
| 2026-01-08 | 509-718 | T-MOBILE USA, INC. | 6529 | ELLENSBURG | WA |
| 2026-01-07 | 530-775 | T-MOBILE USA, INC. | 6529 | YREKA | CA |
| 2026-01-06 | 385-621 | T-MOBILE USA, INC. | 6529 | MURRAY | UT |
| 2026-01-06 | 925-554 | T-MOBILE USA, INC. | 6529 | ANTIOCH | CA |
| 2026-01-06 | 949-948 | T-MOBILE USA, INC. | 6529 | NEWPORTBCH | 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.