NumberResearchRecent prefix assignments
380 prefixes assigned in the last 30 days · from the daily NANPA CO code file, 2026-04
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
Jun 2026
May 2026
Apr 2026
Mar 2026
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Jan 2026
Dec 2025
Nov 2025
Oct 2025
| Assigned | NPA-NXX | Assignee | OCN | Rate center | State |
|---|---|---|---|---|---|
| 972-782 | SOUTHWESTERN BELL | 9533 | FARMERSVL | TX | |
| 972-783 | SOUTHWESTERN BELL | 9533 | DALLAS | TX | |
| 972-784 | SOUTHWESTERN BELL | 9533 | FARMERSVL | TX | |
| 972-785 | FRONTIER SOUTHWEST INC DBA FRONTIER COMM OF TEXAS | 4344 | IRVING | TX | |
| 972-786 | LEVEL 3 OF TELECOM OF TEXAS, LLC - TX | 7516 | IRVING | TX | |
| 972-788 | SOUTHWESTERN BELL | 9533 | DALLAS | TX | |
| 972-789 | SOUTHWESTERN BELL | 9533 | DALLAS | TX | |
| 972-790 | FRONTIER SOUTHWEST INC DBA FRONTIER COMM OF TEXAS | 4344 | IRVING | TX | |
| 972-791 | FRONTIER SOUTHWEST INC DBA FRONTIER COMM OF TEXAS | 4344 | IRVING | TX | |
| 972-793 | MCIMETRO ACCESS TRANSMISSION SERVICES LLC | 7229 | IRVING | TX | |
| 972-794 | MCIMETRO ACCESS TRANSMISSION SERVICES LLC | 7229 | DALLAS | TX | |
| 972-795 | SOUTHWESTERN BELL | 9533 | GRANDPRARI | TX | |
| 972-796 | FRONTIER SOUTHWEST INC DBA FRONTIER COMM OF TEXAS | 4344 | PLANO | TX | |
| 972-797 | FRONTIER SOUTHWEST INC DBA FRONTIER COMM OF TEXAS | 4344 | PLANO | TX | |
| 972-798 | LEVEL 3 COMMUNICATIONS, LLC - TX | 6114 | CARROLLTON | TX | |
| 972-801 | SOUTHWESTERN BELL TELEPHONE COMPANY - TX | 7726 | PLANO | TX | |
| 972-803 | MCIMETRO ACCESS TRANSMISSION SERVICES LLC | 7229 | DALLAS | TX | |
| 972-805 | LEVEL 3 COMMUNICATIONS, LLC - TX | 6114 | PLANO | TX | |
| 972-807 | MCIMETRO ACCESS TRANSMISSION SERVICES LLC | 7229 | DALLAS | TX | |
| 972-808 | SOUTHWESTERN BELL | 9533 | DALLAS | TX | |
| 972-809 | TELEPORT COMMUNICATIONS AMERICA, LLC - TX | 7148 | GRANDPRARI | TX | |
| 972-811 | MULTIPLE OCN LISTING | MULT | XXXXXXXXXX | TX | |
| 972-812 | ONVOY, LLC - TX | 903C | IRVING | TX | |
| 972-813 | MCIMETRO ACCESS TRANSMISSION SERVICES LLC | 7229 | DALLAS | TX | |
| 972-814 | T-MOBILE USA, INC. | 6529 | GRANDPRARI | TX | |
| 972-815 | MCIMETRO ACCESS TRANSMISSION SERVICES LLC | 7229 | IRVING | TX | |
| 972-816 | NEW CINGULAR WIRELESS PCS, LLC - IL | 6534 | GRANDPRARI | TX | |
| 972-818 | SOUTHWESTERN BELL | 9533 | DALLAS | TX | |
| 972-819 | TELEPORT COMMUNICATIONS AMERICA, LLC - TX | 7148 | IRVING | TX | |
| 972-820 | SOUTHWESTERN BELL TELEPHONE COMPANY - TX | 7726 | CARROLLTON | TX | |
| 972-821 | T-MOBILE USA, INC. | 6529 | IRVING | TX | |
| 972-822 | NEW CINGULAR WIRELESS PCS, LLC - IL | 6534 | IRVING | TX | |
| 972-823 | ONVOY, LLC - TX | 903C | IRVING | TX | |
| 972-824 | NEW CINGULAR WIRELESS PCS, LLC - IL | 6534 | GRANDPRARI | TX | |
| 972-826 | GRANDE COMMUNICATIONS NETWORKS, INC. - TX | 7670 | PLANO | TX | |
| 972-827 | MCIMETRO ACCESS TRANSMISSION SERVICES LLC | 7229 | IRVING | TX | |
| 972-828 | SOUTHWESTERN BELL | 9533 | DALLAS | TX | |
| 972-829 | LEVEL 3 COMMUNICATIONS, LLC - TX | 6114 | LEWISVILLE | TX | |
| 972-830 | SOUTHWESTERN BELL | 9533 | DALLAS | TX | |
| 972-831 | SOUTHWESTERN BELL | 9533 | DALLAS | TX | |
| 972-832 | NEW CINGULAR WIRELESS PCS, LLC - IL | 6534 | MCKINNEY | TX | |
| 972-833 | LEVEL 3 COMMUNICATIONS, LLC - TX | 6114 | FERRIS | TX | |
| 972-836 | MCIMETRO ACCESS TRANSMISSION SERVICES LLC | 7229 | PLANO | TX | |
| 972-837 | SOUTHWESTERN BELL | 9533 | MCKINNEY | TX | |
| 972-838 | SOUTHWESTERN BELL | 9533 | MCKINNEY | TX | |
| 972-839 | NEW CINGULAR WIRELESS PCS, LLC - IL | 6534 | GRANDPRARI | TX | |
| 972-840 | FRONTIER SOUTHWEST INC DBA FRONTIER COMM OF TEXAS | 4344 | PLANO | TX | |
| 972-841 | CELLCO PARTNERSHIP DBA VERIZON WIRELESS - TX | 6506 | GRANDPRARI | TX | |
| 972-842 | FRONTIER SOUTHWEST INC DBA FRONTIER COMM OF TEXAS | 2154 | FERRIS | TX | |
| 972-843 | FRONTIER SOUTHWEST INC DBA FRONTIER COMM OF TEXAS | 2154 | NEVADA | TX |
Source: NANPA CO Code Assignments (Utilized, All States, Public), file date 2026-04 — Tier A primary source, refreshed on every import. Viewing is free; bulk downloads require a membership.