NumberResearchRecent prefix assignments
352 prefixes assigned in the last 30 days · from the daily NANPA CO code file, 2026-04
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 |
|---|---|---|---|---|---|
| 949-484 | LEVEL 3 TELECOM OF CALIFORNIA, LP - CA | 7718 | LAGUNA BCH | CA | |
| 949-485 | MCIMETRO ACCESS TRANSMISSION SERVICES LLC - CA | 7240 | CAPITRNVLY | CA | |
| 949-486 | U.S. TELEPACIFIC CORP. DBA TPX COMMUNICATIONS | 671J | IRVINE | CA | |
| 949-487 | PACIFIC BELL | 9740 | CAPITRNVLY | CA | |
| 949-488 | PACIFIC BELL | 9740 | CAPITRNVLY | CA | |
| 949-489 | PACIFIC BELL | 9740 | CAPITRNVLY | CA | |
| 949-492 | PACIFIC BELL | 9740 | CAPITRNVLY | CA | |
| 949-493 | PACIFIC BELL | 9740 | CAPITRNVLY | CA | |
| 949-494 | FRONTIER CALIFORNIA INC. | 2319 | LAGUNA BCH | CA | |
| 949-495 | PACIFIC BELL | 9740 | CAPITRNVLY | CA | |
| 949-496 | PACIFIC BELL | 9740 | CAPITRNVLY | CA | |
| 949-497 | FRONTIER CALIFORNIA INC. | 2319 | LAGUNA BCH | CA | |
| 949-498 | PACIFIC BELL | 9740 | CAPITRNVLY | CA | |
| 949-499 | FRONTIER CALIFORNIA INC. | 2319 | LAGUNA BCH | CA | |
| 949-501 | COMCAST PHONE OF CALIFORNIA, LLC | 394L | IRVINE | CA | |
| 949-502 | COMCAST PHONE OF CALIFORNIA, LLC | 394L | IRVINE | CA | |
| 949-509 | PACIFIC BELL | 9740 | IRVINE | CA | |
| 949-510 | T-MOBILE USA, INC. | 6529 | LAGUNA BCH | CA | |
| 949-511 | MULTIPLE OCN LISTING | MULT | XXXXXXXXXX | CA | |
| 949-514 | CELLCO PARTNERSHIP DBA VERIZON WIRELESS - CA | 6006 | NEWPORTBCH | CA | |
| 949-515 | PACIFIC BELL | 9740 | NEWPORTBCH | CA | |
| 949-518 | COMCAST PHONE OF CALIFORNIA, LLC | 394L | IRVINE | CA | |
| 949-525 | LEVEL 3 COMMUNICATIONS, LLC - CA | 8826 | SADLBK VLY | CA | |
| 949-528 | MATRIX TELECOM, LLC. S/I/I TNCI - CA | 7379 | SADLBK VLY | CA | |
| 949-529 | ONVOY, LLC - CA | 649C | IRVINE | CA | |
| 949-533 | CELLCO PARTNERSHIP DBA VERIZON WIRELESS - CA | 6006 | IRVINE | CA | |
| 949-534 | MATRIX TELECOM, LLC. S/I/I TNCI - CA | 7379 | TRABUCO | CA | |
| 949-540 | U.S. TELEPACIFIC CORP. DBA TPX COMMUNICATIONS | 671J | SADLBK VLY | CA | |
| 949-542 | LEVEL 3 TELECOM OF CALIFORNIA, LP - CA | 7718 | CAPITRNVLY | CA | |
| 949-544 | LEVEL 3 COMMUNICATIONS, LLC - CA | 8826 | SADLBK VLY | CA | |
| 949-545 | U.S. TELEPACIFIC CORP. DBA TPX COMMUNICATIONS | 671J | CAPITRNVLY | CA | |
| 949-546 | COMCAST PHONE OF CALIFORNIA, LLC | 394L | TRABUCO | CA | |
| 949-548 | PACIFIC BELL | 9740 | NEWPORTBCH | CA | |
| 949-551 | PACIFIC BELL | 9740 | IRVINE | CA | |
| 949-552 | PACIFIC BELL | 9740 | IRVINE | CA | |
| 949-553 | PACIFIC BELL | 9740 | IRVINE | CA | |
| 949-554 | U.S. TELEPACIFIC CORP. DBA TPX COMMUNICATIONS | 671J | NEWPORTBCH | CA | |
| 949-555 | MULTIPLE OCN LISTING | MULT | DIR ASST | CA | |
| 949-559 | PACIFIC BELL | 9740 | IRVINE | CA | |
| 949-563 | COMCAST PHONE OF CALIFORNIA, LLC | 394L | SADLBK VLY | CA | |
| 949-566 | PACIFIC BELL | 9740 | NEWPORTBCH | CA | |
| 949-567 | PACIFIC BELL | 9740 | IRVINE | CA | |
| 949-574 | PACIFIC BELL | 9740 | NEWPORTBCH | CA | |
| 949-580 | PACIFIC BELL | 9740 | SADLBK VLY | CA | |
| 949-581 | PACIFIC BELL | 9740 | SADLBK VLY | CA | |
| 949-582 | PACIFIC BELL | 9740 | SADLBK VLY | CA | |
| 949-583 | PACIFIC BELL | 9740 | SADLBK VLY | CA | |
| 949-584 | NEW CINGULAR WIRELESS PCS, LLC | 6010 | RNCHOVIEJO | CA | |
| 949-585 | PACIFIC BELL | 9740 | IRVINE | CA | |
| 949-586 | PACIFIC BELL | 9740 | SADLBK VLY | CA |
Source: NANPA CO Code Assignments (Utilized, All States, Public), file date 2026-04 — Tier A primary source, refreshed on every import. Viewing is free; bulk downloads require a membership.