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
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Oct 2025
| Assigned | NPA-NXX | Assignee | OCN | Rate center | State |
|---|---|---|---|---|---|
| 925-755 | PACIFIC BELL | 9740 | ANTIOCH | CA | |
| 925-756 | PACIFIC BELL | 9740 | ANTIOCH | CA | |
| 925-757 | PACIFIC BELL | 9740 | ANTIOCH | CA | |
| 925-759 | NEW CINGULAR WIRELESS PCS, LLC | 6010 | ANTIOCH | CA | |
| 925-762 | PACIFIC BELL | 9740 | BSHP RNCH | CA | |
| 925-765 | METROPCS, INC. | 5562 | WALNUT CRK | CA | |
| 925-766 | T-MOBILE USA, INC. | 6529 | WALNUT CRK | CA | |
| 925-775 | MATRIX TELECOM, LLC. S/I/I TNCI - CA | 7379 | ANTIOCH | CA | |
| 925-776 | PACIFIC BELL | 9740 | ANTIOCH | CA | |
| 925-777 | PACIFIC BELL | 9740 | ANTIOCH | CA | |
| 925-778 | PACIFIC BELL | 9740 | ANTIOCH | CA | |
| 925-779 | PACIFIC BELL | 9740 | ANTIOCH | CA | |
| 925-783 | CELLCO PARTNERSHIP DBA VERIZON WIRELESS - CA | 6006 | ANTIOCH | CA | |
| 925-784 | CELLCO PARTNERSHIP DBA VERIZON WIRELESS - CA | 6006 | LIVERMORE | CA | |
| 925-785 | CELLCO PARTNERSHIP DBA VERIZON WIRELESS - CA | 6006 | DUBLN-SNRM | CA | |
| 925-786 | CELLCO PARTNERSHIP DBA VERIZON WIRELESS - CA | 6006 | BSHP RNCH | CA | |
| 925-787 | CELLCO PARTNERSHIP DBA VERIZON WIRELESS - CA | 6006 | CONCORD | CA | |
| 925-788 | CELLCO PARTNERSHIP DBA VERIZON WIRELESS - CA | 6006 | WALNUT CRK | CA | |
| 925-789 | CELLCO PARTNERSHIP DBA VERIZON WIRELESS - CA | 6006 | SUNOL | CA | |
| 925-794 | ONVOY, LLC - CA | 649C | MORAGA | CA | |
| 925-798 | PACIFIC BELL | 9740 | CONCORD | CA | |
| 925-800 | ONVOY, LLC - CA | 649C | LIVERMORE | CA | |
| 925-803 | PACIFIC BELL | 9740 | DUBLN-SNRM | CA | |
| 925-804 | TELEPORT COMMUNICATIONS AMERICA, LLC - CA | 7145 | BSHP RNCH | CA | |
| 925-806 | PACIFIC BELL | 9740 | BSHP RNCH | CA | |
| 925-807 | MCIMETRO ACCESS TRANSMISSION SERVICES LLC | 7229 | BSHP RNCH | CA | |
| 925-808 | PACIFIC BELL | 9740 | CONCORD | CA | |
| 925-811 | MULTIPLE OCN LISTING | MULT | XXXXXXXXXX | CA | |
| 925-815 | PACIFIC BELL | 9740 | BSHP RNCH | CA | |
| 925-817 | PACIFIC BELL | 9740 | WALNUT CRK | CA | |
| 925-818 | NEW CINGULAR WIRELESS PCS, LLC | 6010 | WALNUT CRK | CA | |
| 925-819 | NEW CINGULAR WIRELESS PCS, LLC | 6010 | DUBLN-SNRM | CA | |
| 925-820 | PACIFIC BELL | 9740 | DANVILLE | CA | |
| 925-822 | MCIMETRO ACCESS TRANSMISSION SERVICES LLC | 7229 | CONCORD | CA | |
| 925-823 | PACIFIC BELL | 9740 | BSHP RNCH | CA | |
| 925-824 | PACIFIC BELL | 9740 | BSHP RNCH | CA | |
| 925-825 | PACIFIC BELL | 9740 | CONCORD | CA | |
| 925-826 | MCIMETRO ACCESS TRANSMISSION SERVICES LLC - CA | 7240 | CONCORD | CA | |
| 925-827 | PACIFIC BELL | 9740 | CONCORD | CA | |
| 925-828 | PACIFIC BELL | 9740 | DUBLN-SNRM | CA | |
| 925-829 | PACIFIC BELL | 9740 | DUBLN-SNRM | CA | |
| 925-830 | PACIFIC BELL | 9740 | BSHP RNCH | CA | |
| 925-831 | PACIFIC BELL | 9740 | DANVILLE | CA | |
| 925-833 | PACIFIC BELL | 9740 | DUBLN-SNRM | CA | |
| 925-835 | U.S. TELEPACIFIC CORP. DBA TPX COMMUNICATIONS | 671J | SUNOL | CA | |
| 925-837 | PACIFIC BELL | 9740 | DANVILLE | CA | |
| 925-838 | PACIFIC BELL | 9740 | DANVILLE | CA | |
| 925-842 | PACIFIC BELL | 9740 | BSHP RNCH | CA | |
| 925-846 | PACIFIC BELL | 9740 | PLEASANTON | CA | |
| 925-847 | PACIFIC BELL | 9740 | PLEASANTON | CA |
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.