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
New assignments by month
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Oct 2025
| Assigned | NPA-NXX | Assignee | OCN | Rate center | State |
|---|---|---|---|---|---|
| 920-349 | FRONTIER NORTH INC. - WI | 0886 | HUSTISFORD | WI | |
| 920-351 | PAETEC ITEL, LLC | 829J | DE PERE | WI | |
| 920-356 | WISCONSIN BELL INC | 9327 | BEAVER DAM | WI | |
| 920-359 | NEW CINGULAR WIRELESS PCS, LLC - IL | 6534 | NEW LONDON | WI | |
| 920-360 | UNITED STATES CELLULAR - WI | 6274 | GREEN BAY | WI | |
| 920-361 | BRIGHTSPEED OF NORTH CENTRAL WISCONSIN, LLC | 0924 | BERLIN | WI | |
| 920-362 | UNITED STATES CELLULAR - WI | 6274 | GREEN BAY | WI | |
| 920-364 | TWC IP ENABLED SERVICES, LLC | 793K | APPLETON | WI | |
| 920-366 | UNITED STATES CELLULAR - WI | 6274 | GREEN BAY | WI | |
| 920-369 | NEW CINGULAR WIRELESS PCS, LLC - IL | 6534 | GREEN LAKE | WI | |
| 920-370 | UNITED STATES CELLULAR - WI | 6274 | GREEN BAY | WI | |
| 920-371 | T-MOBILE USA, INC. | 6529 | GREEN BAY | WI | |
| 920-372 | UNITED STATES CELLULAR - WI | 6274 | KAUKAUNA | WI | |
| 920-373 | NEW CELL DBA CELLCOM | 6692 | ABRAMS | WI | |
| 920-374 | T-MOBILE USA, INC. | 6529 | MANITOWOC | WI | |
| 920-375 | T-MOBILE USA, INC. | 6529 | FONDDU LAC | WI | |
| 920-376 | METROPCS, INC. | 5562 | OSHKOSH | WI | |
| 920-377 | METROPCS, INC. | 5562 | SHEBOYGAN | WI | |
| 920-378 | METROPCS, INC. | 5562 | APPLETON | WI | |
| 920-379 | CELLCO PARTNERSHIP DBA VERIZON WIRELESS - WI | 6508 | OSHKOSH | WI | |
| 920-380 | WISCONSIN BELL INC | 9327 | APPLETON | WI | |
| 920-386 | WISCONSIN BELL INC | 9327 | JUNEAU | WI | |
| 920-387 | WISCONSIN BELL INC | 9327 | MAYVILLE | WI | |
| 920-388 | WISCONSIN BELL INC | 9327 | KEWAUNEE | WI | |
| 920-389 | NEW CINGULAR WIRELESS PCS, LLC - IL | 6534 | NEW LONDON | WI | |
| 920-390 | NEW CINGULAR WIRELESS PCS, LLC - IL | 6534 | WATERTOWN | WI | |
| 920-391 | WISCONSIN BELL INC | 9327 | GREEN BAY | WI | |
| 920-392 | CELLCO PARTNERSHIP DBA VERIZON WIRELESS - WI | 6508 | BEAVER DAM | WI | |
| 920-394 | BRIGHTSPEED OF CENTRAL WISCONSIN, LLC | 1159 | KINGSTON | WI | |
| 920-398 | BRIGHTSPEED OF CENTRAL WISCONSIN, LLC | 1159 | MARKESAN | WI | |
| 920-402 | NEW CINGULAR WIRELESS PCS, LLC - IL | 6534 | WEYAUWEGA | WI | |
| 920-403 | WISCONSIN BELL INC | 9327 | DE PERE | WI | |
| 920-405 | WISCONSIN BELL INC | 9327 | GREEN BAY | WI | |
| 920-406 | WISCONSIN BELL INC | 9327 | GREEN BAY | WI | |
| 920-407 | NEW CINGULAR WIRELESS PCS, LLC - IL | 6534 | WEYAUWEGA | WI | |
| 920-408 | NEW CINGULAR WIRELESS PCS, LLC - IL | 6534 | WEYAUWEGA | WI | |
| 920-410 | UNITED STATES CELLULAR - WI | 6274 | OSHKOSH | WI | |
| 920-411 | MULTIPLE OCN LISTING | MULT | XXXXXXXXXX | WI | |
| 920-412 | UNITED STATES CELLULAR - WI | 6274 | GREEN BAY | WI | |
| 920-418 | UNITED STATES CELLULAR - WI | 6274 | CHILTON | WI | |
| 920-419 | NEW CELL DBA CELLCOM | 6692 | APPLETON | WI | |
| 920-420 | UNITED STATES CELLULAR - WI | 6274 | OSHKOSH | WI | |
| 920-423 | LEVEL 3 COMMUNICATIONS, LLC - WI | 5489 | LTL CHUTE | WI | |
| 920-424 | WISCONSIN BELL INC | 9327 | OSHKOSH | WI | |
| 920-426 | WISCONSIN BELL INC | 9327 | OSHKOSH | WI | |
| 920-427 | UNITED STATES CELLULAR - WI | 6274 | APPLETON | WI | |
| 920-428 | UNITED STATES CELLULAR - WI | 6274 | APPLETON | WI | |
| 920-429 | WISCONSIN BELL INC | 9327 | GREEN BAY | WI | |
| 920-430 | WISCONSIN BELL INC | 9327 | GREEN BAY | WI | |
| 920-431 | WISCONSIN BELL INC | 9327 | GREEN BAY | WI |
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.