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 |
|---|---|---|---|---|---|
| 760-876 | FRONTIER CALIFORNIA INC. | 4420 | LONE PINE | CA | |
| 760-877 | T-MOBILE USA, INC. | 6529 | ESCONDIDO | CA | |
| 760-878 | FRONTIER CALIFORNIA INC. | 4420 | INDEPNDNCE | CA | |
| 760-882 | ONVOY, LLC - CA | 649C | RANDSBURG | CA | |
| 760-883 | FRONTIER CALIFORNIA INC. | 2319 | PALM SPG | CA | |
| 760-884 | T-MOBILE USA, INC. | 6529 | ESCONDIDO | CA | |
| 760-885 | CELLCO PARTNERSHIP DBA VERIZON WIRELESS - CA | 6006 | VICTORVL | CA | |
| 760-886 | METROPCS, INC. | 5562 | EL CENTRO | CA | |
| 760-887 | NEW CINGULAR WIRELESS PCS, LLC | 6010 | VICTORVL | CA | |
| 760-888 | ONVOY, LLC - CA | 649C | ESCONDIDO | CA | |
| 760-889 | NEW CINGULAR WIRELESS PCS, LLC | 6010 | OCSD CRLS | CA | |
| 760-891 | PACIFIC BELL | 9740 | SAN MARCOS | CA | |
| 760-896 | ONVOY, LLC - CA | 649C | RAMONA | CA | |
| 760-897 | ONVOY, LLC - CA | 649C | EL CENTRO | CA | |
| 760-899 | T-MOBILE USA, INC. | 6529 | INDIO | CA | |
| 760-901 | PACIFIC BELL | 9740 | OCSD OCSD | CA | |
| 760-902 | CELLCO PARTNERSHIP DBA VERIZON WIRELESS - CA | 6006 | PALM SPG | CA | |
| 760-903 | CELLCO PARTNERSHIP DBA VERIZON WIRELESS - CA | 6006 | NEEDLES | CA | |
| 760-907 | T-MOBILE USA, INC. | 6529 | WARNER SPG | CA | |
| 760-911 | MULTIPLE OCN LISTING | MULT | XXXXXXXXXX | CA | |
| 760-913 | BANDWIDTH.COM CLEC, LLC - CA | 981E | VALLEY CTR | CA | |
| 760-916 | MCIMETRO ACCESS TRANSMISSION SERVICES LLC - CA | 7240 | SAN MARCOS | CA | |
| 760-918 | PACIFIC BELL | 9740 | OCSD CRLS | CA | |
| 760-920 | CELLCO PARTNERSHIP DBA VERIZON WIRELESS - CA | 6006 | BISHOP | CA | |
| 760-921 | FRONTIER COMMUNICATIONS OF THE SOUTHWEST INC. - CA | 863F | BLYTHE | CA | |
| 760-922 | FRONTIER COMMUNICATIONS OF THE SOUTHWEST INC. - CA | 863F | BLYTHE | CA | |
| 760-923 | ONVOY, LLC - CA | 649C | MAMMOTHLKS | CA | |
| 760-924 | FRONTIER CALIFORNIA INC. | 4420 | MAMMOTHLKS | CA | |
| 760-926 | AMERICAN MESSAGING SERVICES, LLC | 9748 | VISTA | CA | |
| 760-928 | PONDEROSA TEL. CO. | 2332 | CIMA | CA | |
| 760-929 | PACIFIC BELL | 9740 | OCSD CRLS | CA | |
| 760-930 | PACIFIC BELL | 9740 | OCSD CRLS | CA | |
| 760-931 | PACIFIC BELL | 9740 | OCSD CRLS | CA | |
| 760-932 | FRONTIER CALIFORNIA INC. | 4420 | BRIDGEPORT | CA | |
| 760-933 | FRONTIER CALIFORNIA INC. | 4420 | BENTON | CA | |
| 760-934 | FRONTIER CALIFORNIA INC. | 4420 | MAMMOTHLKS | CA | |
| 760-935 | FRONTIER CALIFORNIA INC. | 4420 | CROWLEY LK | CA | |
| 760-936 | MCIMETRO ACCESS TRANSMISSION SERVICES LLC - CA | 7240 | VISTA | CA | |
| 760-937 | NEW CINGULAR WIRELESS PCS, LLC | 6010 | BISHOP | CA | |
| 760-938 | FRONTIER CALIFORNIA INC. | 4420 | BIG PINE | CA | |
| 760-939 | FRONTIER CALIFORNIA INC. | 4420 | RIDGECREST | CA | |
| 760-940 | PACIFIC BELL | 9740 | VISTA | CA | |
| 760-941 | PACIFIC BELL | 9740 | VISTA | CA | |
| 760-942 | PACIFIC BELL | 9740 | ENCINITAS | CA | |
| 760-943 | PACIFIC BELL | 9740 | ENCINITAS | CA | |
| 760-944 | PACIFIC BELL | 9740 | ENCINITAS | CA | |
| 760-945 | PACIFIC BELL | 9740 | VISTA | CA | |
| 760-946 | FRONTIER CALIFORNIA INC. | 4420 | VTVL APVY | CA | |
| 760-947 | FRONTIER CALIFORNIA INC. | 4420 | VTVL HSPR | CA | |
| 760-948 | FRONTIER CALIFORNIA INC. | 4420 | VTVL HSPR | 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.