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
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Oct 2025
| Assigned | NPA-NXX | Assignee | OCN | Rate center | State |
|---|---|---|---|---|---|
| 949-302 | T-MOBILE USA, INC. | 6529 | IRVINE | CA | |
| 949-303 | CELLCO PARTNERSHIP DBA VERIZON WIRELESS - CA | 6006 | RNCHOVIEJO | CA | |
| 949-305 | COMCAST PHONE OF CALIFORNIA, LLC | 394L | SADLBK VLY | CA | |
| 949-306 | T-MOBILE USA, INC. | 6529 | LAGUNA BCH | CA | |
| 949-307 | T-MOBILE USA, INC. | 6529 | IRVINE | CA | |
| 949-308 | CELLCO PARTNERSHIP DBA VERIZON WIRELESS - CA | 6006 | IRVINE | CA | |
| 949-309 | LEVEL 3 COMMUNICATIONS, LLC - CA | 8826 | SADLBK VLY | CA | |
| 949-311 | MULTIPLE OCN LISTING | MULT | XXXXXXXXXX | CA | |
| 949-313 | PAETEC ITEL, LLC | 829J | LAGUNA BCH | CA | |
| 949-315 | CELLCO PARTNERSHIP DBA VERIZON WIRELESS - CA | 6006 | LAGUNA BCH | CA | |
| 949-318 | UTILITY TELECOM GROUP, LLC - CA | 9262 | SADLBK VLY | CA | |
| 949-319 | UTILITY TELECOM GROUP, LLC - CA | 9262 | TRABUCO | CA | |
| 949-320 | UTILITY TELECOM GROUP, LLC - CA | 9262 | LAGUNA BCH | CA | |
| 949-321 | UTILITY TELECOM GROUP, LLC - CA | 9262 | NEWPORTBCH | CA | |
| 949-322 | CELLCO PARTNERSHIP DBA VERIZON WIRELESS - CA | 6006 | SADLBK VLY | CA | |
| 949-325 | MCIMETRO ACCESS TRANSMISSION SERVICES LLC | 7229 | CAPITRNVLY | CA | |
| 949-326 | ONVOY, LLC - CA | 649C | RNCHOVIEJO | CA | |
| 949-328 | U.S. TELEPACIFIC CORP. DBA TPX COMMUNICATIONS | 671J | SADLBK VLY | CA | |
| 949-329 | MCIMETRO ACCESS TRANSMISSION SERVICES LLC | 7229 | TRABUCO | CA | |
| 949-330 | TELEPORT COMMUNICATIONS AMERICA, LLC - CA | 7139 | SADLBK VLY | CA | |
| 949-331 | U.S. TELEPACIFIC CORP. DBA TPX COMMUNICATIONS | 671J | IRVINE | CA | |
| 949-333 | COMCAST PHONE OF CALIFORNIA, LLC | 394L | IRVINE | CA | |
| 949-334 | MCIMETRO ACCESS TRANSMISSION SERVICES LLC | 7229 | SADLBK VLY | CA | |
| 949-335 | MCIMETRO ACCESS TRANSMISSION SERVICES LLC | 7229 | NEWPORTBCH | CA | |
| 949-337 | T-MOBILE USA, INC. | 6529 | IRVINE | CA | |
| 949-338 | NEW CINGULAR WIRELESS PCS, LLC | 6010 | LAGUNA BCH | CA | |
| 949-340 | LEVEL 3 COMMUNICATIONS, LLC - CA | 8826 | SADLBK VLY | CA | |
| 949-341 | PACIFIC BELL | 9740 | IRVINE | CA | |
| 949-342 | U.S. TELEPACIFIC CORP. DBA TPX COMMUNICATIONS | 671J | LAGUNA BCH | CA | |
| 949-345 | BANDWIDTH.COM CLEC, LLC - CA | 981E | IRVINE | CA | |
| 949-346 | BANDWIDTH.COM CLEC, LLC - CA | 981E | IRVINE | CA | |
| 949-347 | PACIFIC BELL | 9740 | CAPITRNVLY | CA | |
| 949-348 | PACIFIC BELL | 9740 | SADLBK VLY | CA | |
| 949-349 | PACIFIC BELL | 9740 | SADLBK VLY | CA | |
| 949-352 | UTILITY TELECOM GROUP, LLC - CA | 9262 | CAPITRNVLY | CA | |
| 949-356 | ONVOY, LLC - CA | 649C | SADLBK VLY | CA | |
| 949-357 | T-MOBILE USA, INC. | 6529 | LAGUNA BCH | CA | |
| 949-360 | PACIFIC BELL | 9740 | SADLBK VLY | CA | |
| 949-361 | PACIFIC BELL | 9740 | CAPITRNVLY | CA | |
| 949-362 | PACIFIC BELL | 9740 | SADLBK VLY | CA | |
| 949-363 | PACIFIC BELL | 9740 | CAPITRNVLY | CA | |
| 949-364 | PACIFIC BELL | 9740 | CAPITRNVLY | CA | |
| 949-365 | PACIFIC BELL | 9740 | CAPITRNVLY | CA | |
| 949-366 | PACIFIC BELL | 9740 | CAPITRNVLY | CA | |
| 949-367 | PACIFIC BELL | 9740 | SADLBK VLY | CA | |
| 949-368 | PACIFIC BELL | 9740 | CAPITRNVLY | CA | |
| 949-369 | PACIFIC BELL | 9740 | CAPITRNVLY | CA | |
| 949-370 | NEW CINGULAR WIRELESS PCS, LLC | 6010 | CAPITRNVLY | CA | |
| 949-371 | FRONTIER CALIFORNIA INC. | 2319 | LAGUNA BCH | CA | |
| 949-373 | U.S. TELEPACIFIC CORP. DBA TPX COMMUNICATIONS | 671J | CAPITRNVLY | 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.