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 |
|---|---|---|---|---|---|
| 760-607 | U.S. TELEPACIFIC CORP. DBA TPX COMMUNICATIONS | 671J | OCSD CRLS | CA | |
| 760-611 | MULTIPLE OCN LISTING | MULT | XXXXXXXXXX | CA | |
| 760-612 | METROPCS, INC. | 5562 | SNDG SNDG | CA | |
| 760-613 | T-MOBILE USA, INC. | 6529 | ENCINITAS | CA | |
| 760-617 | NEW CINGULAR WIRELESS PCS, LLC | 6010 | VICTORVL | CA | |
| 760-621 | LEVEL 3 COMMUNICATIONS, LLC - CA | 8826 | SAN MARCOS | CA | |
| 760-622 | T-MOBILE USA, INC. | 6529 | OCSD OCSD | CA | |
| 760-624 | IP HORIZON LLC | 515J | CALIPATRIA | CA | |
| 760-627 | CSC VOICE, LLC | 612K | EARP | CA | |
| 760-628 | CELLCO PARTNERSHIP DBA VERIZON WIRELESS - CA | 6006 | VICTORVL | CA | |
| 760-629 | FORT MOJAVE TELECOM INC | 2200 | CALIF VLGE | CA | |
| 760-630 | PACIFIC BELL | 9740 | VISTA | CA | |
| 760-631 | PACIFIC BELL | 9740 | VISTA | CA | |
| 760-632 | PACIFIC BELL | 9740 | ENCINITAS | CA | |
| 760-633 | PACIFIC BELL | 9740 | ENCINITAS | CA | |
| 760-634 | PACIFIC BELL | 9740 | ENCINITAS | CA | |
| 760-635 | PACIFIC BELL | 9740 | ENCINITAS | CA | |
| 760-637 | COMCAST PHONE OF CALIFORNIA, LLC | 394L | OCSD OCSD | CA | |
| 760-638 | NEW CINGULAR WIRELESS PCS, LLC | 6010 | VALLEY CTR | CA | |
| 760-639 | PACIFIC BELL | 9740 | VISTA | CA | |
| 760-641 | T-MOBILE USA, INC. | 6529 | PALM SPG | CA | |
| 760-642 | PACIFIC BELL | 9740 | ENCINITAS | CA | |
| 760-643 | PACIFIC BELL | 9740 | VISTA | CA | |
| 760-644 | T-MOBILE USA, INC. | 6529 | ESCONDIDO | CA | |
| 760-645 | TWC IP ENABLED SERVICES, LLC | 793K | FALLBROOK | CA | |
| 760-647 | FRONTIER CALIFORNIA INC. | 4420 | LEE VINING | CA | |
| 760-648 | FRONTIER CALIFORNIA INC. | 4420 | JUNE LAKE | CA | |
| 760-650 | LEVEL 3 COMMUNICATIONS, LLC - CA | 8826 | VISTA | CA | |
| 760-651 | LEVEL 3 COMMUNICATIONS, LLC - CA | 8826 | VALLEY CTR | CA | |
| 760-652 | LEVEL 3 COMMUNICATIONS, LLC - CA | 8826 | ENCINITAS | CA | |
| 760-653 | LEVEL 3 COMMUNICATIONS, LLC - CA | 8826 | SAN MARCOS | CA | |
| 760-654 | LEVEL 3 COMMUNICATIONS, LLC - CA | 8826 | RAMONA | CA | |
| 760-655 | LEVEL 3 COMMUNICATIONS, LLC - CA | 8826 | OCSD PDTN | CA | |
| 760-657 | PACIFIC BELL | 9740 | SANDY VLLY | CA | |
| 760-661 | NORTH COUNTY COMMUNICATION CORPORATION - CA | 7894 | SAN MARCOS | CA | |
| 760-663 | FRONTIER COMMUNICATIONS OF THE SOUTHWEST INC. - AZ | 4419 | PARKER DAM | CA | |
| 760-664 | FRONTIER COMMUNICATIONS OF THE SOUTHWEST INC. - AZ | 4419 | EARP LSLK | CA | |
| 760-665 | FRONTIER COMMUNICATIONS OF THE SOUTHWEST INC. - CA | 863F | EARP | CA | |
| 760-666 | MCIMETRO ACCESS TRANSMISSION SERVICES LLC - CA | 7240 | VISTA | CA | |
| 760-667 | 33 WIRELESS INC. | 6967 | PALM SPG | CA | |
| 760-668 | CELLCO PARTNERSHIP DBA VERIZON WIRELESS - CA | 6006 | PALM SPG | CA | |
| 760-670 | LEVEL 3 COMMUNICATIONS, LLC - CA | 8826 | ESCONDIDO | CA | |
| 760-674 | FRONTIER CALIFORNIA INC. | 2319 | PALMDESERT | CA | |
| 760-676 | ONVOY, LLC - CA | 649C | DSERTHTSPG | CA | |
| 760-679 | U.S. TELEPACIFIC CORP. DBA TPX COMMUNICATIONS | 671J | EL CENTRO | CA | |
| 760-682 | MCIMETRO ACCESS TRANSMISSION SERVICES LLC - CA | 7240 | SAN MARCOS | CA | |
| 760-683 | ONVOY, LLC - CA | 649C | OCSD CRLS | CA | |
| 760-686 | CELLCO PARTNERSHIP DBA VERIZON WIRELESS - CA | 6006 | VICTORVL | CA | |
| 760-687 | LEVEL 3 COMMUNICATIONS, LLC - CA | 8826 | OCSD OCSD | CA | |
| 760-688 | LEVEL 3 COMMUNICATIONS, LLC - CA | 8826 | OCSD CRLS | 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.