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
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Dec 2025
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Oct 2025
| Assigned | NPA-NXX | Assignee | OCN | Rate center | State |
|---|---|---|---|---|---|
| 972-844 | EXIANT COMMUNICATIONS LLC | 114J | DALLAS | TX | |
| 972-845 | FRONTIER SOUTHWEST INC DBA FRONTIER COMM OF TEXAS | 2154 | PALMER | TX | |
| 972-846 | FRONTIER SOUTHWEST INC DBA FRONTIER COMM OF TEXAS | 2154 | BRISTOL | TX | |
| 972-847 | GRANDE COMMUNICATIONS NETWORKS, INC. - TX | 7670 | DALLAS | TX | |
| 972-848 | ONVOY, LLC - TX | 903C | WILMER | TX | |
| 972-849 | CELLCO PARTNERSHIP DBA VERIZON WIRELESS - TX | 6506 | GRANDPRARI | TX | |
| 972-850 | LEVEL 3 COMMUNICATIONS, LLC - TX | 6114 | DALLAS | TX | |
| 972-851 | SOUTHWESTERN BELL | 9533 | DALLAS | TX | |
| 972-852 | MCIMETRO ACCESS TRANSMISSION SERVICES LLC | 7229 | DALLAS | TX | |
| 972-853 | FRONTIER SOUTHWEST INC DBA FRONTIER COMM OF TEXAS | 2154 | NEVADA | TX | |
| 972-854 | LEVEL 3 OF TELECOM OF TEXAS, LLC - TX | 7516 | GRANDPRARI | TX | |
| 972-855 | SOUTHWESTERN BELL | 9533 | DALLAS | TX | |
| 972-856 | SOUTHWESTERN BELL | 9533 | DALLAS | TX | |
| 972-857 | SOUTHWESTERN BELL | 9533 | DALLAS | TX | |
| 972-858 | SOUTHWESTERN BELL | 9533 | DALLAS | TX | |
| 972-859 | SOUTHWESTERN BELL | 9533 | GRANDPRARI | TX | |
| 972-860 | SOUTHWESTERN BELL | 9533 | DALLAS | TX | |
| 972-861 | SOUTHWESTERN BELL | 9533 | DALLAS | TX | |
| 972-862 | FRONTIER SOUTHWEST INC DBA FRONTIER COMM OF TEXAS | 4344 | CARROLLTON | TX | |
| 972-863 | SOUTHWESTERN BELL | 9533 | DALLAS | TX | |
| 972-864 | FRONTIER SOUTHWEST INC DBA FRONTIER COMM OF TEXAS | 4344 | PLANO | TX | |
| 972-865 | GRANDE COMMUNICATIONS NETWORKS, INC. - TX | 7670 | DALLAS | TX | |
| 972-866 | SOUTHWESTERN BELL | 9533 | DALLAS | TX | |
| 972-867 | FRONTIER SOUTHWEST INC DBA FRONTIER COMM OF TEXAS | 4344 | PLANO | TX | |
| 972-868 | SOUTHWESTERN BELL | 9533 | DALLAS | TX | |
| 972-869 | SOUTHWESTERN BELL | 9533 | DALLAS | TX | |
| 972-870 | SOUTHWESTERN BELL TELEPHONE COMPANY - TX | 7726 | IRVING | TX | |
| 972-871 | SOUTHWESTERN BELL TELEPHONE COMPANY - TX | 7726 | IRVING | TX | |
| 972-872 | SOUTHWESTERN BELL | 9533 | ENNIS | TX | |
| 972-873 | TELETOUCH COMMUNICATIONS, INC. | 6591 | GRANDPRARI | TX | |
| 972-874 | FRONTIER SOUTHWEST INC DBA FRONTIER COMM OF TEXAS | 4344 | LEWISVILLE | TX | |
| 972-875 | SOUTHWESTERN BELL | 9533 | ENNIS | TX | |
| 972-876 | SOUTHWESTERN BELL | 9533 | ENNIS | TX | |
| 972-877 | T-MOBILE USA, INC. | 6529 | GRANDPRARI | TX | |
| 972-878 | SOUTHWESTERN BELL | 9533 | ENNIS | TX | |
| 972-879 | AMERICAN MESSAGING SERVICES, LLC | 9748 | GRANDPRARI | TX | |
| 972-880 | T-MOBILE USA, INC. | 6529 | GRANDPRARI | TX | |
| 972-881 | FRONTIER SOUTHWEST INC DBA FRONTIER COMM OF TEXAS | 4344 | PLANO | TX | |
| 972-882 | SOUTHWESTERN BELL | 9533 | DALLAS | TX | |
| 972-883 | SOUTHWESTERN BELL | 9533 | DALLAS | TX | |
| 972-884 | SOUTHWESTERN BELL | 9533 | DALLAS | TX | |
| 972-886 | GRANDE COMMUNICATIONS NETWORKS, INC. - TX | 7670 | MCKINNEY | TX | |
| 972-887 | FRONTIER SOUTHWEST INC DBA FRONTIER COMM OF TEXAS | 4344 | IRVING | TX | |
| 972-888 | SOUTHWESTERN BELL | 9533 | DALLAS | TX | |
| 972-889 | SOUTHWESTERN BELL | 9533 | DALLAS | TX | |
| 972-890 | MCIMETRO ACCESS TRANSMISSION SERVICES LLC | 7229 | GRANDPRARI | TX | |
| 972-891 | MCIMETRO ACCESS TRANSMISSION SERVICES LLC | 7229 | IRVING | TX | |
| 972-892 | MCIMETRO ACCESS TRANSMISSION SERVICES LLC | 7229 | DALLAS | TX | |
| 972-893 | FRONTIER SOUTHWEST INC DBA FRONTIER COMM OF TEXAS | 4344 | IRVING | TX | |
| 972-894 | LEVEL 3 OF TELECOM OF TEXAS, LLC - TX | 7516 | IRVING | 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.