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 |
|---|---|---|---|---|---|
| 213-489 | PACIFIC BELL | 9740 | LSAN DA 01 | CA | |
| 213-494 | METROPCS NETWORKS, LLC | 899D | LSAN DA 01 | CA | |
| 213-496 | AMERICAN MESSAGING SERVICES, LLC | 9748 | LSAN DA 01 | CA | |
| 213-499 | AMERICAN MESSAGING SERVICES, LLC | 9748 | LSAN DA 01 | CA | |
| 213-500 | CELLCO PARTNERSHIP DBA VERIZON WIRELESS - CA | 6006 | LSAN DA 01 | CA | |
| 213-501 | AMERICAN MESSAGING SERVICES, LLC | 9748 | LSAN DA 01 | CA | |
| 213-503 | CELLCO PARTNERSHIP DBA VERIZON WIRELESS - CA | 6006 | LSAN DA 01 | CA | |
| 213-504 | 33 WIRELESS INC. | 6967 | LSAN DA 01 | CA | |
| 213-505 | CELLCO PARTNERSHIP DBA VERIZON WIRELESS - CA | 6006 | LSAN DA 01 | CA | |
| 213-506 | SPOK, INC. | 6630 | LSAN DA 01 | CA | |
| 213-507 | CELLCO PARTNERSHIP DBA VERIZON WIRELESS - CA | 6006 | LSAN DA 01 | CA | |
| 213-508 | AMERICAN MESSAGING SERVICES, LLC | 9748 | LSAN DA 01 | CA | |
| 213-510 | ONVOY, LLC - CA | 649C | LSAN DA 06 | CA | |
| 213-511 | MULTIPLE OCN LISTING | MULT | XXXXXXXXXX | CA | |
| 213-512 | ONVOY SPECTRUM, LLC | 624H | LSAN DA 07 | CA | |
| 213-514 | LEVEL 3 COMMUNICATIONS, LLC - CA | 8826 | LSAN DA 07 | CA | |
| 213-515 | METROPCS NETWORKS, LLC | 899D | LSAN DA 06 | CA | |
| 213-516 | U.S. TELEPACIFIC CORP. DBA TPX COMMUNICATIONS | 671J | LSAN DA 07 | CA | |
| 213-517 | 33 WIRELESS INC. | 6967 | LSAN DA 01 | CA | |
| 213-519 | TELEPORT COMMUNICATIONS AMERICA, LLC - CA | 7139 | LSAN DA 07 | CA | |
| 213-520 | PACIFIC BELL | 9740 | LSAN DA 14 | CA | |
| 213-528 | VOIP INNOVATIONS, LLC | 597F | LSAN DA 02 | CA | |
| 213-529 | ONVOY, LLC - CA | 649C | LSAN DA 10 | CA | |
| 213-532 | PACIFIC BELL | 9740 | LSAN DA 01 | CA | |
| 213-533 | PACIFIC BELL | 9740 | LSAN DA 01 | CA | |
| 213-534 | PAETEC ITEL, LLC | 829J | LSAN DA 01 | CA | |
| 213-536 | LEVEL 3 COMMUNICATIONS, LLC - CA | 8826 | LSAN DA 07 | CA | |
| 213-537 | BANDWIDTH.COM CLEC, LLC - CA | 981E | LSAN DA 01 | CA | |
| 213-538 | PACIFIC BELL | 9740 | LSAN DA 01 | CA | |
| 213-539 | T-MOBILE USA, INC. | 6529 | LSAN DA 01 | CA | |
| 213-542 | U.S. TELEPACIFIC CORP. DBA TPX COMMUNICATIONS | 671J | LSAN DA 01 | CA | |
| 213-545 | U.S. TELEPACIFIC CORP. DBA TPX COMMUNICATIONS | 671J | LSAN DA 07 | CA | |
| 213-550 | IP HORIZON LLC | 515J | LSAN DA 01 | CA | |
| 213-553 | PACIFIC BELL | 9740 | LSAN DA 01 | CA | |
| 213-555 | MULTIPLE OCN LISTING | MULT | DIR ASST | CA | |
| 213-559 | ONVOY, LLC - CA | 649C | LSAN DA 01 | CA | |
| 213-570 | METROPCS NETWORKS, LLC | 899D | LSAN DA 10 | CA | |
| 213-572 | U.S. TELEPACIFIC CORP. DBA TPX COMMUNICATIONS | 671J | LSAN DA 01 | CA | |
| 213-576 | PACIFIC BELL | 9740 | LSAN DA 01 | CA | |
| 213-580 | PACIFIC BELL | 9740 | LSAN DA 01 | CA | |
| 213-587 | ONVOY, LLC - CA | 649C | LSAN DA 01 | CA | |
| 213-590 | NEW CINGULAR WIRELESS PCS, LLC | 6010 | LSAN DA 01 | CA | |
| 213-591 | NEW CINGULAR WIRELESS PCS, LLC | 6010 | CMTN GRDN | CA | |
| 213-593 | PACIFIC BELL | 9740 | LSAN DA 01 | CA | |
| 213-595 | NEW CINGULAR WIRELESS PCS, LLC | 6010 | LSAN DA 01 | CA | |
| 213-596 | LEVEL 3 COMMUNICATIONS, LLC - CA | 8826 | LSAN DA 01 | CA | |
| 213-598 | CELLCO PARTNERSHIP DBA VERIZON WIRELESS - CA | 6006 | LSAN DA 01 | CA | |
| 213-599 | PACIFIC BELL | 9740 | LSAN DA 01 | CA | |
| 213-600 | ONVOY, LLC - CA | 649C | LSAN DA 10 | CA | |
| 213-602 | LEAP TELECOM, LLC | 616J | 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.