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
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Dec 2025
Nov 2025
Oct 2025
| Assigned | NPA-NXX | Assignee | OCN | Rate center | State |
|---|---|---|---|---|---|
| 972-673 | SOUTHWESTERN BELL TELEPHONE COMPANY - TX | 7726 | PLANO | TX | |
| 972-674 | BANDWIDTH.COM CLEC, LLC - TX | 004F | DALLAS | TX | |
| 972-675 | FRONTIER SOUTHWEST INC DBA FRONTIER COMM OF TEXAS | 4344 | PLANO | TX | |
| 972-676 | MCIMETRO ACCESS TRANSMISSION SERVICES LLC | 7229 | DALLAS | TX | |
| 972-677 | TELEPORT COMMUNICATIONS AMERICA, LLC - TX | 7148 | DALLAS | TX | |
| 972-678 | GRANDE COMMUNICATIONS NETWORKS, INC. - TX | 7670 | ALLEN | TX | |
| 972-679 | NEW CINGULAR WIRELESS PCS, LLC - IL | 6534 | GRANDPRARI | TX | |
| 972-680 | SOUTHWESTERN BELL | 9533 | DALLAS | TX | |
| 972-681 | SOUTHWESTERN BELL | 9533 | DALLAS | TX | |
| 972-682 | SOUTHWESTERN BELL | 9533 | DALLAS | TX | |
| 972-683 | SOUTHWESTERN BELL | 9533 | MCKINNEY | TX | |
| 972-684 | SOUTHWESTERN BELL | 9533 | DALLAS | TX | |
| 972-685 | SOUTHWESTERN BELL | 9533 | DALLAS | TX | |
| 972-686 | SOUTHWESTERN BELL | 9533 | DALLAS | TX | |
| 972-687 | SOUTHWESTERN BELL | 9533 | DALLAS | TX | |
| 972-690 | SOUTHWESTERN BELL | 9533 | DALLAS | TX | |
| 972-691 | FRONTIER SOUTHWEST INC DBA FRONTIER COMM OF TEXAS | 4344 | LEWISVILLE | TX | |
| 972-692 | MCIMETRO ACCESS TRANSMISSION SERVICES LLC | 7229 | DALLAS | TX | |
| 972-693 | T-MOBILE USA, INC. | 6529 | GRANDPRARI | TX | |
| 972-694 | FRONTIER SOUTHWEST INC DBA FRONTIER COMM OF TEXAS | 2154 | JOSEPHINE | TX | |
| 972-695 | FRONTIER SOUTHWEST INC DBA FRONTIER COMM OF TEXAS | 4344 | CARROLLTON | TX | |
| 972-696 | FRONTIER SOUTHWEST INC DBA FRONTIER COMM OF TEXAS | 4344 | PLANO | TX | |
| 972-697 | AT&T - LOCAL | 7421 | GRANDPRARI | TX | |
| 972-698 | SOUTHWESTERN BELL | 9533 | DALLAS | TX | |
| 972-699 | SOUTHWESTERN BELL | 9533 | DALLAS | TX | |
| 972-700 | TX | ||||
| 972-701 | SOUTHWESTERN BELL | 9533 | DALLAS | TX | |
| 972-702 | SOUTHWESTERN BELL | 9533 | DALLAS | TX | |
| 972-703 | METROPCS, INC. | 5562 | TERRELL | TX | |
| 972-704 | SOUTHWESTERN BELL | 9533 | FRISCO | TX | |
| 972-705 | SOUTHWESTERN BELL | 9533 | DALLAS | TX | |
| 972-706 | SOUTHWESTERN BELL | 9533 | DALLAS | TX | |
| 972-707 | MCIMETRO ACCESS TRANSMISSION SERVICES LLC | 7229 | DALLAS | TX | |
| 972-708 | SOUTHWESTERN BELL | 9533 | DALLAS | TX | |
| 972-709 | SOUTHWESTERN BELL | 9533 | DALLAS | TX | |
| 972-711 | MULTIPLE OCN LISTING | MULT | XXXXXXXXXX | TX | |
| 972-712 | SOUTHWESTERN BELL | 9533 | FRISCO | TX | |
| 972-713 | SOUTHWESTERN BELL | 9533 | DALLAS | TX | |
| 972-714 | FRONTIER SOUTHWEST INC DBA FRONTIER COMM OF TEXAS | 4344 | IRVING | TX | |
| 972-715 | SOUTHWESTERN BELL | 9533 | DALLAS | TX | |
| 972-716 | SOUTHWESTERN BELL | 9533 | DALLAS | TX | |
| 972-717 | FRONTIER SOUTHWEST INC DBA FRONTIER COMM OF TEXAS | 4344 | IRVING | TX | |
| 972-718 | FRONTIER SOUTHWEST INC DBA FRONTIER COMM OF TEXAS | 4344 | IRVING | TX | |
| 972-719 | FRONTIER SOUTHWEST INC DBA FRONTIER COMM OF TEXAS | 4344 | IRVING | TX | |
| 972-720 | SOUTHWESTERN BELL | 9533 | DALLAS | TX | |
| 972-721 | FRONTIER SOUTHWEST INC DBA FRONTIER COMM OF TEXAS | 4344 | IRVING | TX | |
| 972-722 | SOUTHWESTERN BELL | 9533 | ROCKWALL | TX | |
| 972-723 | SOUTHWESTERN BELL | 9533 | MIDLOTHIAN | TX | |
| 972-724 | FRONTIER SOUTHWEST INC DBA FRONTIER COMM OF TEXAS | 4344 | LEWISVILLE | TX | |
| 972-725 | MCIMETRO ACCESS TRANSMISSION SERVICES LLC | 7229 | DALLAS | 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.