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
Aug 2026
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Dec 2025
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Oct 2025
| Assigned | NPA-NXX | Assignee | OCN | Rate center | State |
|---|---|---|---|---|---|
| 760-543 | METROPCS, INC. | 5562 | OCSD PDTN | CA | |
| 760-544 | LEVEL 3 COMMUNICATIONS, LLC - CA | 8826 | BLYTHE | CA | |
| 760-545 | AT&T - LOCAL | 7421 | IMPERIAL | CA | |
| 760-546 | MCIMETRO ACCESS TRANSMISSION SERVICES LLC - CA | 7240 | ESCONDIDO | CA | |
| 760-547 | U.S. TELEPACIFIC CORP. DBA TPX COMMUNICATIONS | 671J | OCSD OCSD | CA | |
| 760-548 | HD CARRIER LLC | 321J | PALM SPG | CA | |
| 760-549 | FRONTIER CALIFORNIA INC. | 4420 | LKISABELLA | CA | |
| 760-550 | CELLCO PARTNERSHIP DBA VERIZON WIRELESS - CA | 6006 | BRAWLEY | CA | |
| 760-551 | NORTH COUNTY COMMUNICATION CORPORATION - CA | 7894 | RAMONA | CA | |
| 760-553 | LEVEL 3 COMMUNICATIONS, LLC - CA | 8826 | VICTORVL | CA | |
| 760-554 | NEW CINGULAR WIRELESS PCS, LLC | 6010 | EL CENTRO | CA | |
| 760-555 | MULTIPLE OCN LISTING | MULT | DIR ASST | CA | |
| 760-556 | T-MOBILE USA, INC. | 6529 | EL CENTRO | CA | |
| 760-557 | MCIMETRO ACCESS TRANSMISSION SERVICES LLC - CA | 7240 | ENCINITAS | CA | |
| 760-558 | ONVOY SPECTRUM, LLC | 624H | PALM SPG | CA | |
| 760-559 | T-MOBILE USA, INC. | 6529 | VICTORVL | CA | |
| 760-560 | MCIMETRO ACCESS TRANSMISSION SERVICES LLC - CA | 7240 | VISTA | CA | |
| 760-561 | LEVEL 3 COMMUNICATIONS, LLC - CA | 8826 | VTVL ADLN | CA | |
| 760-563 | LEVEL 3 COMMUNICATIONS, LLC - CA | 8826 | WRWD PHLN | CA | |
| 760-564 | FRONTIER CALIFORNIA INC. | 2319 | INDIO | CA | |
| 760-565 | TWC IP ENABLED SERVICES, LLC | 793K | PALMDESERT | CA | |
| 760-566 | MCIMETRO ACCESS TRANSMISSION SERVICES LLC - CA | 7240 | SAN MARCOS | CA | |
| 760-567 | CELLCO PARTNERSHIP DBA VERIZON WIRELESS - CA | 6006 | PALM SPG | CA | |
| 760-568 | FRONTIER CALIFORNIA INC. | 2319 | PALMDESERT | CA | |
| 760-570 | PACIFIC BELL | 9740 | SNDG SNDG | CA | |
| 760-571 | LEVEL 3 TELECOM OF CALIFORNIA, LP - CA | 7718 | SAN MARCOS | CA | |
| 760-572 | WINTERHAVEN TEL. CO. | 2323 | WINTERHVN | CA | |
| 760-575 | U.S. TELEPACIFIC CORP. DBA TPX COMMUNICATIONS | 671J | OCSD PDTN | CA | |
| 760-576 | BANDWIDTH.COM CLEC, LLC - CA | 981E | OCSD OCSD | CA | |
| 760-577 | FRONTIER CALIFORNIA INC. | 4420 | BARSTOW | CA | |
| 760-578 | METROPCS NETWORKS, LLC | 899D | PALMDESERT | CA | |
| 760-579 | PACIFIC BELL | 9740 | OCSD CRLS | CA | |
| 760-581 | LEVEL 3 TELECOM OF CALIFORNIA, LP - CA | 7718 | WRIGHTWOOD | CA | |
| 760-582 | ONVOY, LLC - CA | 649C | BISHOP | CA | |
| 760-583 | NEW CINGULAR WIRELESS PCS, LLC | 6010 | OCSD OCSD | CA | |
| 760-584 | 33 WIRELESS INC. | 6967 | VICTORVL | CA | |
| 760-585 | ONVOY, LLC - CA | 649C | OCSD CRLS | CA | |
| 760-586 | T-MOBILE USA, INC. | 6529 | OCSD OCSD | CA | |
| 760-587 | NEW CINGULAR WIRELESS PCS, LLC | 6010 | BRAWLEY | CA | |
| 760-588 | ONVOY, LLC - CA | 649C | FORT IRWIN | CA | |
| 760-589 | ONVOY, LLC - CA | 649C | DEATH VLY | CA | |
| 760-591 | PACIFIC BELL | 9740 | SAN MARCOS | CA | |
| 760-594 | T-MOBILE USA, INC. | 6529 | ESCONDIDO | CA | |
| 760-597 | PACIFIC BELL | 9740 | VISTA | CA | |
| 760-598 | PACIFIC BELL | 9740 | VISTA | CA | |
| 760-599 | PACIFIC BELL | 9740 | VISTA | CA | |
| 760-601 | TELEPORT COMMUNICATIONS AMERICA, LLC - CA | 7139 | PALMDESERT | CA | |
| 760-602 | PACIFIC BELL | 9740 | OCSD CRLS | CA | |
| 760-603 | PACIFIC BELL | 9740 | OCSD CRLS | CA | |
| 760-606 | ONVOY, LLC - CA | 649C | BARSTOW | 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.