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
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| Assigned | NPA-NXX | Assignee | OCN | Rate center | State |
|---|---|---|---|---|---|
| 213-347 | PACIFIC BELL | 9740 | LSAN DA 01 | CA | |
| 213-348 | BANDWIDTH.COM CLEC, LLC - CA | 981E | LSAN DA 07 | CA | |
| 213-350 | SPOK, INC. | 6630 | LSAN DA 01 | CA | |
| 213-351 | PACIFIC BELL | 9740 | LSAN DA 10 | CA | |
| 213-353 | PACIFIC BELL | 9740 | LSAN DA 10 | CA | |
| 213-355 | U.S. TELEPACIFIC CORP. DBA TPX COMMUNICATIONS | 671J | LSAN DA 10 | CA | |
| 213-356 | PACIFIC BELL | 9740 | LSAN DA 01 | CA | |
| 213-360 | SPOK, INC. | 6630 | LSAN DA 01 | CA | |
| 213-362 | PACIFIC BELL | 9740 | LSAN DA 01 | CA | |
| 213-363 | 33 WIRELESS INC. | 6967 | LSAN DA 01 | CA | |
| 213-364 | CELLCO PARTNERSHIP DBA VERIZON WIRELESS - CA | 6006 | LSAN DA 01 | CA | |
| 213-365 | PACIFIC BELL | 9740 | LSAN DA 10 | CA | |
| 213-366 | 33 WIRELESS INC. | 6967 | CMTN GRDN | CA | |
| 213-367 | PACIFIC BELL | 9740 | LSAN DA 01 | CA | |
| 213-368 | PACIFIC BELL | 9740 | LSAN DA 10 | CA | |
| 213-369 | CELLCO PARTNERSHIP DBA VERIZON WIRELESS - CA | 6006 | LSAN DA 01 | CA | |
| 213-373 | U.S. TELEPACIFIC CORP. DBA TPX COMMUNICATIONS | 671J | LSAN DA 07 | CA | |
| 213-375 | U.S. TELEPACIFIC CORP. DBA TPX COMMUNICATIONS | 671J | LSAN DA 10 | CA | |
| 213-377 | ONVOY, LLC - CA | 649C | LSAN DA 10 | CA | |
| 213-380 | PACIFIC BELL | 9740 | LSAN DA 10 | CA | |
| 213-381 | PACIFIC BELL | 9740 | LSAN DA 10 | CA | |
| 213-382 | PACIFIC BELL | 9740 | LSAN DA 10 | CA | |
| 213-383 | PACIFIC BELL | 9740 | LSAN DA 10 | CA | |
| 213-384 | PACIFIC BELL | 9740 | LSAN DA 10 | CA | |
| 213-385 | PACIFIC BELL | 9740 | LSAN DA 10 | CA | |
| 213-386 | PACIFIC BELL | 9740 | LSAN DA 10 | CA | |
| 213-387 | PACIFIC BELL | 9740 | LSAN DA 10 | CA | |
| 213-388 | PACIFIC BELL | 9740 | LSAN DA 10 | CA | |
| 213-389 | PACIFIC BELL | 9740 | LSAN DA 10 | CA | |
| 213-391 | AMERICAN MESSAGING SERVICES, LLC | 9748 | LSAN DA 01 | CA | |
| 213-392 | CELLCO PARTNERSHIP DBA VERIZON WIRELESS - CA | 6006 | LSAN DA 01 | CA | |
| 213-393 | CELLCO PARTNERSHIP DBA VERIZON WIRELESS - CA | 6006 | LSAN DA 01 | CA | |
| 213-401 | TELEPORT COMMUNICATIONS AMERICA, LLC - CA | 7139 | LSAN DA 10 | CA | |
| 213-402 | PAETEC ITEL, LLC | 829J | LSAN DA 01 | CA | |
| 213-403 | PAETEC ITEL, LLC | 829J | LSAN DA 01 | CA | |
| 213-404 | PAETEC ITEL, LLC | 829J | LSAN DA 01 | CA | |
| 213-405 | PAETEC ITEL, LLC | 829J | LSAN DA 01 | CA | |
| 213-406 | PAETEC ITEL, LLC | 829J | LSAN DA 01 | CA | |
| 213-407 | CELLCO PARTNERSHIP DBA VERIZON WIRELESS - CA | 6006 | LSAN DA 01 | CA | |
| 213-408 | MCIMETRO ACCESS TRANSMISSION SERVICES LLC | 7229 | LSAN DA 01 | CA | |
| 213-411 | MULTIPLE OCN LISTING | MULT | XXXXXXXXXX | CA | |
| 213-412 | PAETEC ITEL, LLC | 829J | LSAN DA 01 | CA | |
| 213-413 | PACIFIC BELL | 9740 | LSAN DA 10 | CA | |
| 213-415 | PAETEC ITEL, LLC | 829J | LSAN DA 01 | CA | |
| 213-416 | PAETEC ITEL, LLC | 829J | LSAN DA 01 | CA | |
| 213-417 | PAETEC ITEL, LLC | 829J | LSAN DA 01 | CA | |
| 213-422 | NEW CINGULAR WIRELESS PCS, LLC | 6010 | LSAN DA 01 | CA | |
| 213-426 | PACIFIC BELL | 9740 | LSAN DA 01 | CA | |
| 213-427 | PACIFIC BELL | 9740 | LSAN DA 10 | CA | |
| 213-430 | PACIFIC BELL | 9740 | LSAN DA 01 | 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.