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 |
|---|---|---|---|---|---|
| 209-337 | U.S. TELEPACIFIC CORP. DBA TPX COMMUNICATIONS | 671J | STOCKTON | CA | |
| 209-338 | U.S. TELEPACIFIC CORP. DBA TPX COMMUNICATIONS | 671J | MODESTO | CA | |
| 209-339 | PACIFIC BELL | 9740 | LODI | CA | |
| 209-340 | ONVOY, LLC - CA | 649C | LODI | CA | |
| 209-341 | PACIFIC BELL | 9740 | MODESTO | CA | |
| 209-342 | PACIFIC BELL | 9740 | MODESTO | CA | |
| 209-343 | U.S. TELEPACIFIC CORP. DBA TPX COMMUNICATIONS | 671J | MODESTO | CA | |
| 209-344 | AMERICAN MESSAGING SERVICES, LLC | 6906 | MODESTO | CA | |
| 209-345 | T-MOBILE USA, INC. | 6529 | MODESTO | CA | |
| 209-347 | CELLCO PARTNERSHIP DBA VERIZON WIRELESS - CA | 6006 | MARIPOSA | CA | |
| 209-349 | COMCAST PHONE OF CALIFORNIA, LLC | 394L | MERCED | CA | |
| 209-350 | CA | ||||
| 209-351 | NEW CINGULAR WIRELESS PCS, LLC | 6010 | LINDEN | CA | |
| 209-352 | NEW CINGULAR WIRELESS PCS, LLC | 6010 | TUOLUMNE | CA | |
| 209-356 | PACIFIC BELL | 9740 | ATWATER | CA | |
| 209-357 | PACIFIC BELL | 9740 | ATWATER | CA | |
| 209-358 | PACIFIC BELL | 9740 | ATWATER | CA | |
| 209-363 | NEW CINGULAR WIRELESS PCS, LLC | 6010 | FRESNO | CA | |
| 209-364 | FRONTIER CALIFORNIA INC. | 4420 | DOS PALOS | CA | |
| 209-365 | PACIFIC BELL | 9740 | LODI | CA | |
| 209-366 | PACIFIC BELL | 9740 | LODI | CA | |
| 209-367 | PACIFIC BELL | 9740 | LODI | CA | |
| 209-368 | PACIFIC BELL | 9740 | LODI | CA | |
| 209-369 | PACIFIC BELL | 9740 | LODI | CA | |
| 209-370 | ONVOY, LLC - CA | 649C | LODI | CA | |
| 209-371 | MCIMETRO ACCESS TRANSMISSION SERVICES LLC - CA | 7128 | LODI | CA | |
| 209-372 | PACIFIC BELL | 9740 | YOSEMITE | CA | |
| 209-374 | HORNITOS TEL. CO. | 2322 | CATHEYSVLY | CA | |
| 209-375 | PACIFIC BELL | 9740 | YOSEMITE | CA | |
| 209-376 | HORNITOS TEL. CO. | 2322 | HORNITOS | CA | |
| 209-377 | HORNITOS TEL. CO. | 2322 | MT BULLION | CA | |
| 209-378 | HORNITOS TEL. CO. | 2322 | HORNITOS | CA | |
| 209-379 | PACIFIC BELL | 9740 | YOSEMITE | CA | |
| 209-380 | NEW CINGULAR WIRELESS PCS, LLC | 6010 | MODESTO | CA | |
| 209-381 | PACIFIC BELL | 9740 | MERCED | CA | |
| 209-382 | PACIFIC BELL | 9740 | PLANADA | CA | |
| 209-383 | PACIFIC BELL | 9740 | MERCED | CA | |
| 209-384 | PACIFIC BELL | 9740 | MERCED | CA | |
| 209-385 | PACIFIC BELL | 9740 | MERCED | CA | |
| 209-386 | PACIFIC BELL | 9740 | MERCED | CA | |
| 209-387 | FRONTIER CALIFORNIA INC. | 4420 | DOS PALOS | CA | |
| 209-388 | PACIFIC BELL | 9740 | MERCED | CA | |
| 209-389 | PACIFIC BELL | 9740 | LE GRAND | CA | |
| 209-391 | ONVOY, LLC - CA | 649C | YOSEMITE | CA | |
| 209-392 | FRONTIER CALIFORNIA INC. | 4420 | DOS PALOS | CA | |
| 209-394 | GLOBAL VALLEY NETWORKS | 2315 | LIVINGSTON | CA | |
| 209-395 | ONVOY, LLC - CA | 649C | STOCKTON | CA | |
| 209-396 | BANDWIDTH.COM CLEC, LLC - CA | 981E | SNRA MAIN | CA | |
| 209-398 | GLOBAL VALLEY NETWORKS | 2315 | LIVINGSTON | CA | |
| 209-400 | ONVOY, LLC - CA | 649C | LODI | 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.