NumberResearchRecent prefix assignments
352 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
Feb 2026
Jan 2026
Dec 2025
Nov 2025
Oct 2025
| Assigned | NPA-NXX | Assignee | OCN | Rate center | State |
|---|---|---|---|---|---|
| 951-741 | CELLCO PARTNERSHIP DBA VERIZON WIRELESS - CA | 6006 | CORONA | CA | |
| 951-743 | NEW CINGULAR WIRELESS PCS, LLC | 6010 | RIVERSIDE | CA | |
| 951-744 | ONVOY, LLC - CA | 649C | HEMT ANZA | CA | |
| 951-749 | U.S. TELEPACIFIC CORP. DBA TPX COMMUNICATIONS | 671J | MIRA LOMA | CA | |
| 951-750 | TELEPORT COMMUNICATIONS AMERICA, LLC - CA | 7139 | RIVERSIDE | CA | |
| 951-751 | CELLCO PARTNERSHIP DBA VERIZON WIRELESS - CA | 6006 | CORONA | CA | |
| 951-755 | AT&T - LOCAL | 7421 | BANNING | CA | |
| 951-763 | FRONTIER CALIFORNIA INC. | 2319 | HEMT ANZA | CA | |
| 951-764 | NEW CINGULAR WIRELESS PCS, LLC | 6010 | TEMECULA | CA | |
| 951-765 | FRONTIER CALIFORNIA INC. | 2319 | HEMT HEMT | CA | |
| 951-766 | FRONTIER CALIFORNIA INC. | 2319 | HEMT HEMT | CA | |
| 951-767 | FRONTIER CALIFORNIA INC. | 2319 | HEMT SAGE | CA | |
| 951-769 | FRONTIER CALIFORNIA INC. | 2319 | BANNING | CA | |
| 951-774 | PACIFIC BELL | 9740 | RIVERSIDE | CA | |
| 951-776 | PACIFIC BELL | 9740 | WOODCREST | CA | |
| 951-777 | BANDWIDTH.COM CLEC, LLC - CA | 981E | RIVERSIDE | CA | |
| 951-778 | PACIFIC BELL | 9740 | RIVERSIDE | CA | |
| 951-779 | PACIFIC BELL | 9740 | RIVERSIDE | CA | |
| 951-780 | PACIFIC BELL | 9740 | WOODCREST | CA | |
| 951-781 | PACIFIC BELL | 9740 | RIVERSIDE | CA | |
| 951-782 | PACIFIC BELL | 9740 | RIVERSIDE | CA | |
| 951-784 | PACIFIC BELL | 9740 | RIVERSIDE | CA | |
| 951-785 | PACIFIC BELL | 9740 | ARLINGTON | CA | |
| 951-786 | PACIFIC BELL | 9740 | RIVERSIDE | CA | |
| 951-787 | PACIFIC BELL | 9740 | RIVERSIDE | CA | |
| 951-788 | PACIFIC BELL | 9740 | RIVERSIDE | CA | |
| 951-789 | PACIFIC BELL | 9740 | WOODCREST | CA | |
| 951-791 | FRONTIER CALIFORNIA INC. | 2319 | HEMT HEMT | CA | |
| 951-797 | TWC IP ENABLED SERVICES, LLC | 793K | BANNING | CA | |
| 951-800 | ONVOY, LLC - CA | 649C | WOODCREST | CA | |
| 951-805 | CELLCO PARTNERSHIP DBA VERIZON WIRELESS - CA | 6006 | ELSINORE | CA | |
| 951-808 | PACIFIC BELL | 9740 | CORONA | CA | |
| 951-809 | CELLCO PARTNERSHIP DBA VERIZON WIRELESS - CA | 6006 | RIVERSIDE | CA | |
| 951-811 | MULTIPLE OCN LISTING | MULT | XXXXXXXXXX | CA | |
| 951-817 | PACIFIC BELL | 9740 | CORONA | CA | |
| 951-824 | LEVEL 3 COMMUNICATIONS, LLC - CA | 8826 | RIVERSIDE | CA | |
| 951-826 | PACIFIC BELL | 9740 | RIVERSIDE | CA | |
| 951-827 | PACIFIC BELL | 9740 | RIVERSIDE | CA | |
| 951-830 | T-MOBILE USA, INC. | 6529 | RIVERSIDE | CA | |
| 951-833 | CELLCO PARTNERSHIP DBA VERIZON WIRELESS - CA | 6006 | CORONA | CA | |
| 951-834 | CELLCO PARTNERSHIP DBA VERIZON WIRELESS - CA | 6006 | MURRIETA | CA | |
| 951-840 | CELLCO PARTNERSHIP DBA VERIZON WIRELESS - CA | 6006 | ARLINGTON | CA | |
| 951-845 | FRONTIER CALIFORNIA INC. | 2319 | BANNING | CA | |
| 951-846 | LEVEL 3 TELECOM OF CALIFORNIA, LP - CA | 7718 | BANNING | CA | |
| 951-848 | BANDWIDTH.COM CLEC, LLC - CA | 981E | RIVERSIDE | CA | |
| 951-849 | FRONTIER CALIFORNIA INC. | 2319 | BANNING | CA | |
| 951-878 | BANDWIDTH.COM CLEC, LLC - CA | 981E | LAKEVIEWNU | CA | |
| 951-888 | BANDWIDTH.COM CLEC, LLC - CA | 981E | RIVERSIDE | CA | |
| 951-893 | LEVEL 3 TELECOM OF CALIFORNIA, LP - CA | 7718 | CORONA | CA | |
| 951-894 | U.S. TELEPACIFIC CORP. DBA TPX COMMUNICATIONS | 671J | MURRIETA | CA |
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.