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
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| Assigned | NPA-NXX | Assignee | OCN | Rate center | State |
|---|---|---|---|---|---|
| 213-717 | SPOK, INC. | 6630 | LSAN DA 01 | CA | |
| 213-718 | CELLCO PARTNERSHIP DBA VERIZON WIRELESS - CA | 6006 | LSAN DA 01 | CA | |
| 213-723 | TWILIO INTERNATIONAL, INC. | 506J | LSAN DA 01 | CA | |
| 213-736 | PACIFIC BELL | 9740 | LSAN DA 10 | CA | |
| 213-738 | PACIFIC BELL | 9740 | LSAN DA 10 | CA | |
| 213-739 | PACIFIC BELL | 9740 | LSAN DA 10 | CA | |
| 213-740 | FRONTIER CALIFORNIA INC. | 7534 | LSAN DA 07 | CA | |
| 213-741 | PACIFIC BELL | 9740 | LSAN DA 07 | CA | |
| 213-742 | PACIFIC BELL | 9740 | LSAN DA 07 | CA | |
| 213-743 | PACIFIC BELL | 9740 | LSAN DA 07 | CA | |
| 213-744 | PACIFIC BELL | 9740 | LSAN DA 07 | CA | |
| 213-745 | PACIFIC BELL | 9740 | LSAN DA 07 | CA | |
| 213-746 | PACIFIC BELL | 9740 | LSAN DA 07 | CA | |
| 213-747 | PACIFIC BELL | 9740 | LSAN DA 07 | CA | |
| 213-748 | PACIFIC BELL | 9740 | LSAN DA 07 | CA | |
| 213-749 | PACIFIC BELL | 9740 | LSAN DA 07 | CA | |
| 213-760 | CELLCO PARTNERSHIP DBA VERIZON WIRELESS - CA | 6006 | LSAN DA 01 | CA | |
| 213-761 | METROPCS NETWORKS, LLC | 899D | LSAN DA 01 | CA | |
| 213-763 | PACIFIC BELL | 9740 | LSAN DA 07 | CA | |
| 213-764 | FRONTIER CALIFORNIA INC. | 7534 | LSAN DA 07 | CA | |
| 213-765 | PACIFIC BELL | 9740 | LSAN DA 07 | CA | |
| 213-769 | IP HORIZON LLC | 515J | LSAN DA 10 | CA | |
| 213-777 | UTILITY TELECOM GROUP, LLC - CA | 9262 | LSAN DA 01 | CA | |
| 213-784 | LEVEL 3 COMMUNICATIONS, LLC - CA | 8826 | LSAN DA 01 | CA | |
| 213-785 | LEVEL 3 TELECOM OF CALIFORNIA, LP - CA | 7718 | LSAN DA 01 | CA | |
| 213-787 | TELEPORT COMMUNICATIONS AMERICA, LLC - CA | 7139 | LSAN DA 01 | CA | |
| 213-792 | METROPCS NETWORKS, LLC | 899D | LSAN DA 01 | CA | |
| 213-793 | NEW CINGULAR WIRELESS PCS, LLC | 6010 | LSAN DA 01 | CA | |
| 213-797 | TELEPORT COMMUNICATIONS AMERICA, LLC - CA | 7139 | LSAN DA 01 | CA | |
| 213-798 | METROPCS NETWORKS, LLC | 899D | LSAN DA 01 | CA | |
| 213-799 | ONVOY, LLC - CA | 649C | LSAN DA 07 | CA | |
| 213-800 | ONVOY, LLC - CA | 649C | LSAN DA 07 | CA | |
| 213-802 | ONVOY, LLC - CA | 649C | LSAN DA 01 | CA | |
| 213-804 | T-MOBILE USA, INC. | 6529 | LSAN DA 01 | CA | |
| 213-805 | LEVEL 3 COMMUNICATIONS, LLC - CA | 8826 | LSAN DA 10 | CA | |
| 213-807 | U.S. TELEPACIFIC CORP. DBA TPX COMMUNICATIONS | 671J | LSAN DA 10 | CA | |
| 213-808 | PACIFIC BELL | 9740 | LSAN DA 01 | CA | |
| 213-811 | MULTIPLE OCN LISTING | MULT | XXXXXXXXXX | CA | |
| 213-813 | SPOK, INC. | 6630 | LSAN DA 01 | CA | |
| 213-816 | ONVOY, LLC - CA | 649C | LSAN DA 10 | CA | |
| 213-817 | PACIFIC BELL | 9740 | LSAN DA 01 | CA | |
| 213-819 | CELLCO PARTNERSHIP DBA VERIZON WIRELESS - CA | 6006 | LSAN DA 01 | CA | |
| 213-821 | FRONTIER CALIFORNIA INC. | 7534 | LSAN DA 07 | CA | |
| 213-830 | PACIFIC BELL | 9740 | LSAN DA 01 | CA | |
| 213-833 | PACIFIC BELL | 9740 | LSAN DA 01 | CA | |
| 213-835 | U.S. TELEPACIFIC CORP. DBA TPX COMMUNICATIONS | 671J | LSAN DA 10 | CA | |
| 213-839 | LEVEL 3 TELECOM OF CALIFORNIA, LP - CA | 7718 | LSAN DA 07 | CA | |
| 213-840 | METROPCS NETWORKS, LLC | 899D | LSAN DA 01 | CA | |
| 213-841 | METROPCS NETWORKS, LLC | 899D | LSAN DA 01 | CA | |
| 213-842 | METROPCS NETWORKS, LLC | 899D | LSAN DA 01 | 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.