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
Jul 2026
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Dec 2025
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Oct 2025
| Assigned | NPA-NXX | Assignee | OCN | Rate center | State |
|---|---|---|---|---|---|
| 214-743 | SOUTHWESTERN BELL | 9533 | DALLAS | TX | |
| 214-744 | SOUTHWESTERN BELL | 9533 | DALLAS | TX | |
| 214-745 | SOUTHWESTERN BELL | 9533 | DALLAS | TX | |
| 214-746 | SOUTHWESTERN BELL | 9533 | DALLAS | TX | |
| 214-747 | SOUTHWESTERN BELL | 9533 | DALLAS | TX | |
| 214-748 | SOUTHWESTERN BELL | 9533 | DALLAS | TX | |
| 214-749 | SOUTHWESTERN BELL | 9533 | DALLAS | TX | |
| 214-750 | SOUTHWESTERN BELL | 9533 | DALLAS | TX | |
| 214-751 | SOUTHWESTERN BELL | 9533 | DALLAS | TX | |
| 214-752 | SOUTHWESTERN BELL | 9533 | DALLAS | TX | |
| 214-753 | SOUTHWESTERN BELL | 9533 | DALLAS | TX | |
| 214-754 | SOUTHWESTERN BELL | 9533 | DALLAS | TX | |
| 214-755 | NEW CINGULAR WIRELESS PCS, LLC - IL | 6534 | GRANDPRARI | TX | |
| 214-756 | SOUTHWESTERN BELL | 9533 | DALLAS | TX | |
| 214-757 | SOUTHWESTERN BELL | 9533 | DALLAS | TX | |
| 214-758 | SOUTHWESTERN BELL | 9533 | DALLAS | TX | |
| 214-759 | SPOK, INC. | 6630 | GRANDPRARI | TX | |
| 214-760 | SOUTHWESTERN BELL | 9533 | DALLAS | TX | |
| 214-761 | SOUTHWESTERN BELL | 9533 | DALLAS | TX | |
| 214-762 | NEW CINGULAR WIRELESS PCS, LLC - IL | 6534 | GRANDPRARI | TX | |
| 214-763 | NEW CINGULAR WIRELESS PCS, LLC - IL | 6534 | GRANDPRARI | TX | |
| 214-764 | LEVEL 3 COMMUNICATIONS, LLC - TX | 6114 | DALLAS | TX | |
| 214-765 | TELEPORT COMMUNICATIONS AMERICA, LLC - TX | 7148 | DALLAS | TX | |
| 214-766 | CELLCO PARTNERSHIP DBA VERIZON WIRELESS - TX | 6506 | GRANDPRARI | TX | |
| 214-767 | SOUTHWESTERN BELL | 9533 | DALLAS | TX | |
| 214-768 | LEVEL 3 OF TELECOM OF TEXAS, LLC - TX | 7516 | DALLAS | TX | |
| 214-769 | CELLCO PARTNERSHIP DBA VERIZON WIRELESS - TX | 6506 | GRANDPRARI | TX | |
| 214-770 | CELLCO PARTNERSHIP DBA VERIZON WIRELESS - TX | 6506 | GRANDPRARI | TX | |
| 214-771 | SOUTHWESTERN BELL | 9533 | ROCKWALL | TX | |
| 214-772 | METROPCS, INC. | 5562 | DALLAS | TX | |
| 214-773 | NEW CINGULAR WIRELESS PCS, LLC - IL | 6534 | GRANDPRARI | TX | |
| 214-774 | ONVOY, LLC - TX | 903C | DALLAS | TX | |
| 214-775 | MCIMETRO ACCESS TRANSMISSION SERVICES LLC | 7229 | DALLAS | TX | |
| 214-777 | SOUTHWESTERN BELL | 9533 | DALLAS | TX | |
| 214-778 | SOUTHWESTERN BELL TELEPHONE COMPANY - TX | 7726 | PLANO | TX | |
| 214-779 | SOUTHWESTERN BELL | 9533 | DALLAS | TX | |
| 214-781 | SPOK, INC. | 6630 | GRANDPRARI | TX | |
| 214-782 | SOUTHWESTERN BELL | 9533 | DALLAS | TX | |
| 214-786 | SPOK, INC. | 6630 | GRANDPRARI | TX | |
| 214-787 | SOUTHWESTERN BELL | 9533 | GRANDPRARI | TX | |
| 214-788 | LEVEL 3 OF TELECOM OF TEXAS, LLC - TX | 7516 | GRANDPRARI | TX | |
| 214-789 | CELLCO PARTNERSHIP DBA VERIZON WIRELESS - TX | 6506 | GRANDPRARI | TX | |
| 214-792 | SOUTHWESTERN BELL | 9533 | DALLAS | TX | |
| 214-793 | NEW CINGULAR WIRELESS PCS, LLC - IL | 6534 | GRANDPRARI | TX | |
| 214-794 | NEW CINGULAR WIRELESS PCS, LLC - IL | 6534 | GRANDPRARI | TX | |
| 214-796 | NEW CINGULAR WIRELESS PCS, LLC - IL | 6534 | GRANDPRARI | TX | |
| 214-797 | NEW CINGULAR WIRELESS PCS, LLC - IL | 6534 | GRANDPRARI | TX | |
| 214-798 | SPOK, INC. | 6630 | GRANDPRARI | TX | |
| 214-800 | SOUTHWESTERN BELL | 9533 | DALLAS | TX | |
| 214-801 | NEW CINGULAR WIRELESS PCS, LLC - IL | 6534 | GRANDPRARI | 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.