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 |
|---|---|---|---|---|---|
| 925-848 | MATRIX TELECOM, LLC. S/I/I TNCI - CA | 7379 | ANTIOCH | CA | |
| 925-849 | U.S. TELEPACIFIC CORP. DBA TPX COMMUNICATIONS | 671J | CONCORD | CA | |
| 925-854 | MCIMETRO ACCESS TRANSMISSION SERVICES LLC - CA | 7240 | DANVILLE | CA | |
| 925-855 | PACIFIC BELL | 9740 | DANVILLE | CA | |
| 925-856 | MCIMETRO ACCESS TRANSMISSION SERVICES LLC | 7229 | DANVILLE | CA | |
| 925-858 | NEW CINGULAR WIRELESS PCS, LLC | 6010 | DUBLN-SNRM | CA | |
| 925-860 | ONVOY, LLC - CA | 649C | SUNOL | CA | |
| 925-862 | PACIFIC BELL | 9740 | SUNOL | CA | |
| 925-864 | METROPCS, INC. | 5562 | CONCORD | CA | |
| 925-866 | PACIFIC BELL | 9740 | BSHP RNCH | CA | |
| 925-867 | PACIFIC BELL | 9740 | BSHP RNCH | CA | |
| 925-871 | ONVOY, LLC - CA | 649C | LAFAYETTE | CA | |
| 925-872 | CELLCO PARTNERSHIP DBA VERIZON WIRELESS - CA | 6006 | PLEASANTON | CA | |
| 925-875 | PACIFIC BELL | 9740 | DUBLN-SNRM | CA | |
| 925-876 | NEW CINGULAR WIRELESS PCS, LLC | 6010 | WALNUT CRK | CA | |
| 925-878 | T-MOBILE USA, INC. | 6529 | LAFAYETTE | CA | |
| 925-884 | MATRIX TELECOM, LLC. S/I/I TNCI - CA | 7379 | BSHP RNCH | CA | |
| 925-885 | MATRIX TELECOM, LLC. S/I/I TNCI - CA | 7379 | ORINDA | CA | |
| 925-886 | MATRIX TELECOM, LLC. S/I/I TNCI - CA | 7379 | DANVILLE | CA | |
| 925-887 | MATRIX TELECOM, LLC. S/I/I TNCI - CA | 7379 | CONCORD | CA | |
| 925-888 | MATRIX TELECOM, LLC. S/I/I TNCI - CA | 7379 | MORAGA | CA | |
| 925-889 | MATRIX TELECOM, LLC. S/I/I TNCI - CA | 7379 | CLAYTON | CA | |
| 925-890 | NEW CINGULAR WIRELESS PCS, LLC | 6010 | CONCORD | CA | |
| 925-891 | MATRIX TELECOM, LLC. S/I/I TNCI - CA | 7379 | WALNUT CRK | CA | |
| 925-892 | MATRIX TELECOM, LLC. S/I/I TNCI - CA | 7379 | PLEASANTON | CA | |
| 925-895 | METROPCS, INC. | 5562 | DUBLN-SNRM | CA | |
| 925-899 | NEW CINGULAR WIRELESS PCS, LLC | 6010 | WALNUT CRK | CA | |
| 925-900 | ONVOY, LLC - CA | 649C | LAFAYETTE | CA | |
| 925-901 | PACIFIC BELL | 9740 | BSHP RNCH | CA | |
| 925-904 | PACIFIC BELL | 9740 | BSHP RNCH | CA | |
| 925-905 | MATRIX TELECOM, LLC. S/I/I TNCI - CA | 7379 | DUBLN-SNRM | CA | |
| 925-906 | PACIFIC BELL | 9740 | WALNUT CRK | CA | |
| 925-911 | MULTIPLE OCN LISTING | MULT | XXXXXXXXXX | CA | |
| 925-918 | CELLCO PARTNERSHIP DBA VERIZON WIRELESS - CA | 6006 | PLEASANTON | CA | |
| 925-920 | SPOK, INC. | 6630 | WALNUT CRK | CA | |
| 925-924 | PACIFIC BELL | 9740 | PLEASANTON | CA | |
| 925-926 | PACIFIC BELL | 9740 | WALNUT CRK | CA | |
| 925-927 | PACIFIC BELL | 9740 | WALNUT CRK | CA | |
| 925-930 | PACIFIC BELL | 9740 | WALNUT CRK | CA | |
| 925-931 | PACIFIC BELL | 9740 | PLEASANTON | CA | |
| 925-932 | PACIFIC BELL | 9740 | WALNUT CRK | CA | |
| 925-933 | PACIFIC BELL | 9740 | WALNUT CRK | CA | |
| 925-934 | PACIFIC BELL | 9740 | WALNUT CRK | CA | |
| 925-935 | PACIFIC BELL | 9740 | WALNUT CRK | CA | |
| 925-937 | PACIFIC BELL | 9740 | WALNUT CRK | CA | |
| 925-938 | PACIFIC BELL | 9740 | WALNUT CRK | CA | |
| 925-939 | PACIFIC BELL | 9740 | WALNUT CRK | CA | |
| 925-940 | ONVOY, LLC - CA | 649C | WALNUT CRK | CA | |
| 925-941 | PACIFIC BELL | 9740 | WALNUT CRK | CA | |
| 925-942 | PACIFIC BELL | 9740 | WALNUT CRK | 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.