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 |
|---|---|---|---|---|---|
| 949-306 | T-MOBILE USA, INC. | 6529 | LAGUNA BCH | CA | |
| 949-307 | T-MOBILE USA, INC. | 6529 | IRVINE | CA | |
| 949-337 | T-MOBILE USA, INC. | 6529 | IRVINE | CA | |
| 949-357 | T-MOBILE USA, INC. | 6529 | LAGUNA BCH | CA | |
| 949-400 | T-MOBILE USA, INC. | 6529 | IRVINE | CA | |
| 949-510 | T-MOBILE USA, INC. | 6529 | LAGUNA BCH | CA | |
| 949-678 | T-MOBILE USA, INC. | 6529 | IRVINE | CA | |
| 949-689 | T-MOBILE USA, INC. | 6529 | IRVINE | CA | |
| 949-795 | T-MOBILE USA, INC. | 6529 | IRVINE | CA | |
| 949-842 | T-MOBILE USA, INC. | 6529 | CAPITRNVLY | CA | |
| 949-893 | T-MOBILE USA, INC. | 6529 | RNCHOVIEJO | CA | |
| 949-910 | T-MOBILE USA, INC. | 6529 | IRVINE | CA | |
| 951-283 | T-MOBILE USA, INC. | 6529 | CORONA | CA | |
| 951-334 | T-MOBILE USA, INC. | 6529 | RIVERSIDE | CA | |
| 951-347 | T-MOBILE USA, INC. | 6529 | RIVERSIDE | CA | |
| 951-378 | T-MOBILE USA, INC. | 6529 | PERRIS | CA | |
| 951-426 | T-MOBILE USA, INC. | 6529 | HEMT SNJC | CA | |
| 951-436 | T-MOBILE USA, INC. | 6529 | PERRIS | CA | |
| 951-442 | T-MOBILE USA, INC. | 6529 | PERRIS | CA | |
| 951-453 | T-MOBILE USA, INC. | 6529 | RIVERSIDE | CA | |
| 951-515 | T-MOBILE USA, INC. | 6529 | CORONA | CA | |
| 951-536 | T-MOBILE USA, INC. | 6529 | RIVERSIDE | CA | |
| 951-538 | T-MOBILE USA, INC. | 6529 | RIVERSIDE | CA | |
| 951-544 | T-MOBILE USA, INC. | 6529 | RIVERSIDE | CA | |
| 951-550 | T-MOBILE USA, INC. | 6529 | PERRIS | CA | |
| 951-575 | T-MOBILE USA, INC. | 6529 | PERRIS | CA | |
| 951-662 | T-MOBILE USA, INC. | 6529 | RIVERSIDE | CA | |
| 951-667 | T-MOBILE USA, INC. | 6529 | TEMSCL CNY | CA | |
| 951-712 | T-MOBILE USA, INC. | 6529 | RIVERSIDE | CA | |
| 951-830 | T-MOBILE USA, INC. | 6529 | RIVERSIDE | CA | |
| 951-973 | T-MOBILE USA, INC. | 6529 | MURRIETA | CA | |
| 970-201 | T-MOBILE USA, INC. | 6529 | GRAND JCT | CO | |
| 970-213 | T-MOBILE USA, INC. | 6529 | FT COLLINS | CO | |
| 970-230 | T-MOBILE USA, INC. | 6529 | GLENWD SPG | CO | |
| 970-234 | T-MOBILE USA, INC. | 6529 | GRAND JCT | CO | |
| 970-281 | T-MOBILE USA, INC. | 6529 | FRASER | CO | |
| 970-291 | T-MOBILE USA, INC. | 6529 | STEAMBOSPG | CO | |
| 970-310 | T-MOBILE USA, INC. | 6529 | FT COLLINS | CO | |
| 970-331 | T-MOBILE USA, INC. | 6529 | VAIL | CO | |
| 970-361 | T-MOBILE USA, INC. | 6529 | GRAND JCT | CO | |
| 970-391 | T-MOBILE USA, INC. | 6529 | FT COLLINS | CO | |
| 970-402 | T-MOBILE USA, INC. | 6529 | FT COLLINS | CO | |
| 970-412 | T-MOBILE USA, INC. | 6529 | FT COLLINS | CO | |
| 970-426 | T-MOBILE USA, INC. | 6529 | DURANGO | CO | |
| 970-470 | T-MOBILE USA, INC. | 6529 | VAIL | CO | |
| 970-515 | T-MOBILE USA, INC. | 6529 | GREELEY | CO | |
| 970-518 | T-MOBILE USA, INC. | 6529 | GREELEY | CO | |
| 970-534 | T-MOBILE USA, INC. | 6529 | GREELEY | CO | |
| 970-556 | T-MOBILE USA, INC. | 6529 | FT COLLINS | CO | |
| 970-566 | T-MOBILE USA, INC. | 6529 | FT COLLINS | CO |
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.