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
Jul 2026
Jun 2026
May 2026
Apr 2026
Mar 2026
Feb 2026
Jan 2026
Dec 2025
Nov 2025
Oct 2025
| Assigned | NPA-NXX | Assignee | OCN | Rate center | State |
|---|---|---|---|---|---|
| 760-421 | CELLCO PARTNERSHIP DBA VERIZON WIRELESS - CA | 6006 | OCSD OCSD | CA | |
| 760-422 | U.S. TELEPACIFIC CORP. DBA TPX COMMUNICATIONS | 671J | PALM SPG | CA | |
| 760-423 | U.S. TELEPACIFIC CORP. DBA TPX COMMUNICATIONS | 671J | PALMDESERT | CA | |
| 760-424 | U.S. TELEPACIFIC CORP. DBA TPX COMMUNICATIONS | 671J | PALM SPG | CA | |
| 760-425 | IP HORIZON LLC | 515J | EL CENTRO | CA | |
| 760-427 | METROPCS, INC. | 5562 | EL CENTRO | CA | |
| 760-429 | NEW CINGULAR WIRELESS PCS, LLC | 6010 | OCSD OCSD | CA | |
| 760-430 | PACIFIC BELL | 9740 | OCSD PDTN | CA | |
| 760-431 | PACIFIC BELL | 9740 | OCSD CRLS | CA | |
| 760-432 | PACIFIC BELL | 9740 | ESCONDIDO | CA | |
| 760-433 | PACIFIC BELL | 9740 | OCSD OCSD | CA | |
| 760-434 | PACIFIC BELL | 9740 | OCSD OCSD | CA | |
| 760-435 | PACIFIC BELL | 9740 | OCSD OCSD | CA | |
| 760-436 | PACIFIC BELL | 9740 | ENCINITAS | CA | |
| 760-437 | CENTURYLINK COMMUNICATIONS, LLC | 508J | DESERT CTR | CA | |
| 760-438 | PACIFIC BELL | 9740 | OCSD CRLS | CA | |
| 760-439 | PACIFIC BELL | 9740 | OCSD OCSD | CA | |
| 760-440 | COMCAST PHONE OF CALIFORNIA, LLC | 394L | RAMONA | CA | |
| 760-443 | T-MOBILE USA, INC. | 6529 | ESCONDIDO | CA | |
| 760-444 | COMCAST PHONE OF CALIFORNIA, LLC | 394L | OCSD CRLS | CA | |
| 760-445 | CELLCO PARTNERSHIP DBA VERIZON WIRELESS - CA | 6006 | ESCONDIDO | CA | |
| 760-446 | FRONTIER CALIFORNIA INC. | 4420 | RIDGECREST | CA | |
| 760-448 | U.S. TELEPACIFIC CORP. DBA TPX COMMUNICATIONS | 671J | OCSD CRLS | CA | |
| 760-450 | MCIMETRO ACCESS TRANSMISSION SERVICES LLC - CA | 7240 | OCSD OCSD | CA | |
| 760-451 | PACIFIC BELL | 9740 | FALLBROOK | CA | |
| 760-452 | PAETEC ITEL, LLC | 829J | ENCINITAS | CA | |
| 760-454 | ONVOY, LLC - CA | 649C | ENCINITAS | CA | |
| 760-456 | LEVEL 3 TELECOM OF CALIFORNIA, LP - CA | 7718 | ENCINITAS | CA | |
| 760-457 | CELLCO PARTNERSHIP DBA VERIZON WIRELESS - CA | 6006 | IMPERIAL | CA | |
| 760-458 | T-MOBILE USA, INC. | 6529 | OCSD OCSD | CA | |
| 760-459 | LEVEL 3 COMMUNICATIONS, LLC - CA | 8826 | PALM SPG | CA | |
| 760-460 | LEVEL 3 COMMUNICATIONS, LLC - CA | 8826 | EL CENTRO | CA | |
| 760-461 | UTILITY TELECOM GROUP, LLC - CA | 9262 | RIDGECREST | CA | |
| 760-462 | ONVOY, LLC - CA | 649C | DEATH VLY | CA | |
| 760-464 | T-MOBILE USA, INC. | 6529 | PALM SPG | CA | |
| 760-465 | LEVEL 3 TELECOM OF CALIFORNIA, LP - CA | 7718 | BORREGO | CA | |
| 760-466 | U.S. TELEPACIFIC CORP. DBA TPX COMMUNICATIONS | 671J | ESCONDIDO | CA | |
| 760-468 | NEW CINGULAR WIRELESS PCS, LLC | 6010 | FALLBROOK | CA | |
| 760-469 | METROPCS NETWORKS, LLC | 899D | PALMDESERT | CA | |
| 760-470 | NEW CINGULAR WIRELESS PCS, LLC | 6010 | VISTA | CA | |
| 760-471 | PACIFIC BELL | 9740 | SAN MARCOS | CA | |
| 760-472 | MCIMETRO ACCESS TRANSMISSION SERVICES LLC - CA | 7240 | OCSD PDTN | CA | |
| 760-474 | LEVEL 3 TELECOM OF CALIFORNIA, LP - CA | 7718 | EL MIRAGE | CA | |
| 760-475 | LEVEL 3 TELECOM OF CALIFORNIA, LP - CA | 7718 | VICTORVL | CA | |
| 760-476 | PACIFIC BELL | 9740 | OCSD CRLS | CA | |
| 760-477 | U.S. TELEPACIFIC CORP. DBA TPX COMMUNICATIONS | 671J | VISTA | CA | |
| 760-478 | LEVEL 3 TELECOM OF CALIFORNIA, LP - CA | 7718 | KERNVILLE | CA | |
| 760-479 | PACIFIC BELL | 9740 | ENCINITAS | CA | |
| 760-480 | PACIFIC BELL | 9740 | ESCONDIDO | CA | |
| 760-481 | PAETEC ITEL, LLC | 829J | SAN MARCOS | 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.