NumberResearchRecent prefix assignments
371 prefixes assigned in the last 30 days · from the daily NANPA CO code file, 09/19/2026
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
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Oct 2025
| Assigned | NPA-NXX | Assignee | OCN | Rate center | State |
|---|---|---|---|---|---|
| 214-678 | SOUTHWESTERN BELL | 9533 | DALLAS | TX | |
| 214-679 | NEW CINGULAR WIRELESS PCS, LLC - IL | 6534 | GRANDPRARI | TX | |
| 214-680 | T-MOBILE USA, INC. | 6529 | GRANDPRARI | TX | |
| 214-681 | CELLCO PARTNERSHIP DBA VERIZON WIRELESS - TX | 6506 | GRANDPRARI | TX | |
| 214-682 | T-MOBILE USA, INC. | 6529 | GRANDPRARI | TX | |
| 214-683 | NEW CINGULAR WIRELESS PCS, LLC - IL | 6534 | GRANDPRARI | TX | |
| 214-684 | T-MOBILE USA, INC. | 6529 | GRANDPRARI | TX | |
| 214-686 | NEW CINGULAR WIRELESS PCS, LLC - IL | 6534 | GRANDPRARI | TX | |
| 214-687 | LEVEL 3 OF TELECOM OF TEXAS, LLC - TX | 7516 | IRVING | TX | |
| 214-688 | SOUTHWESTERN BELL | 9533 | DALLAS | TX | |
| 214-689 | SOUTHWESTERN BELL | 9533 | DALLAS | TX | |
| 214-691 | SOUTHWESTERN BELL | 9533 | DALLAS | TX | |
| 214-692 | SOUTHWESTERN BELL | 9533 | DALLAS | TX | |
| 214-693 | NEW CINGULAR WIRELESS PCS, LLC - IL | 6534 | GRANDPRARI | TX | |
| 214-694 | SOUTHWESTERN BELL | 9533 | DALLAS | TX | |
| 214-695 | NEW CINGULAR WIRELESS PCS, LLC - IL | 6534 | GRANDPRARI | TX | |
| 214-696 | SOUTHWESTERN BELL | 9533 | DALLAS | TX | |
| 214-697 | NEW CINGULAR WIRELESS PCS, LLC - IL | 6534 | GRANDPRARI | TX | |
| 214-698 | SOUTHWESTERN BELL | 9533 | DALLAS | TX | |
| 214-700 | TX | ||||
| 214-702 | AT&T - LOCAL | 7421 | DLFTWTARPT | TX | |
| 214-703 | SOUTHWESTERN BELL TELEPHONE COMPANY - TX | 7726 | PLANO | TX | |
| 214-704 | NEW CINGULAR WIRELESS PCS, LLC - IL | 6534 | GRANDPRARI | TX | |
| 214-706 | SOUTHWESTERN BELL | 9533 | DALLAS | TX | |
| 214-707 | NEW CINGULAR WIRELESS PCS, LLC - IL | 6534 | GRANDPRARI | TX | |
| 214-710 | ONVOY, LLC - TX | 903C | DALLAS | TX | |
| 214-711 | MULTIPLE OCN LISTING | MULT | XXXXXXXXXX | TX | |
| 214-712 | SOUTHWESTERN BELL | 9533 | DALLAS | TX | |
| 214-716 | LEVEL 3 COMMUNICATIONS, LLC - TX | 6114 | DALLAS | TX | |
| 214-718 | T-MOBILE USA, INC. | 6529 | GRANDPRARI | TX | |
| 214-719 | HELMSCO, INC. | 6833 | DALLAS | TX | |
| 214-720 | SOUTHWESTERN BELL | 9533 | DALLAS | TX | |
| 214-721 | SOUTHWESTERN BELL | 9533 | DALLAS | TX | |
| 214-722 | MCIMETRO ACCESS TRANSMISSION SERVICES LLC | 7229 | DALLAS | TX | |
| 214-723 | METROPCS, INC. | 5562 | DALLAS | TX | |
| 214-724 | CELLCO PARTNERSHIP DBA VERIZON WIRELESS - TX | 6506 | GRANDPRARI | TX | |
| 214-725 | NEW CINGULAR WIRELESS PCS, LLC - IL | 6534 | GRANDPRARI | TX | |
| 214-726 | SOUTHWESTERN BELL | 9533 | MCKINNEY | TX | |
| 214-727 | T-MOBILE USA, INC. | 6529 | DALLAS | TX | |
| 214-728 | NEW CINGULAR WIRELESS PCS, LLC - IL | 6534 | GRANDPRARI | TX | |
| 214-729 | NEW CINGULAR WIRELESS PCS, LLC - IL | 6534 | GRANDPRARI | TX | |
| 214-730 | SOUTHWESTERN BELL | 9533 | DALLAS | TX | |
| 214-731 | FRONTIER SOUTHWEST INC DBA FRONTIER COMM OF TEXAS | 4344 | CARROLLTON | TX | |
| 214-732 | T-MOBILE USA, INC. | 6529 | GRANDPRARI | TX | |
| 214-734 | T-MOBILE USA, INC. | 6529 | GRANDPRARI | TX | |
| 214-737 | SPOK, INC. | 6630 | GRANDPRARI | TX | |
| 214-739 | SOUTHWESTERN BELL | 9533 | DALLAS | TX | |
| 214-740 | SOUTHWESTERN BELL | 9533 | DALLAS | TX | |
| 214-741 | SOUTHWESTERN BELL | 9533 | DALLAS | TX | |
| 214-742 | SOUTHWESTERN BELL | 9533 | DALLAS | TX |
Source: NANPA CO Code Assignments (Utilized, All States, Public), file date 09/19/2026 — Tier A primary source, refreshed on every import. Viewing is free; bulk downloads require a membership.