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 |
|---|---|---|---|---|---|
| 920-432 | WISCONSIN BELL INC | 9327 | GREEN BAY | WI | |
| 920-433 | WISCONSIN BELL INC | 9327 | GREEN BAY | WI | |
| 920-434 | WISCONSIN BELL INC | 9327 | GREEN BAY | WI | |
| 920-435 | WISCONSIN BELL INC | 9327 | GREEN BAY | WI | |
| 920-436 | WISCONSIN BELL INC | 9327 | GREEN BAY | WI | |
| 920-437 | WISCONSIN BELL INC | 9327 | GREEN BAY | WI | |
| 920-438 | WISCONSIN BELL INC | 9327 | GREEN BAY | WI | |
| 920-439 | STOCKBRIDGE & SHERWOOD TEL. CO. | 0954 | STOCKBDG | WI | |
| 920-440 | SPOK, INC. | 6630 | GREEN BAY | WI | |
| 920-444 | WISCONSIN BELL INC | 9327 | GREEN BAY | WI | |
| 920-445 | WISCONSIN BELL INC | 9327 | GREEN BAY | WI | |
| 920-446 | BRIGHTSPEED OF WESTERN WISCONSIN, LLC | 0841 | FREMONT | WI | |
| 920-448 | WISCONSIN BELL INC | 9327 | GREEN BAY | WI | |
| 920-450 | UNITED STATES CELLULAR - WI | 6274 | APPLETON | WI | |
| 920-451 | WISCONSIN BELL INC | 9327 | SHEBOYGAN | WI | |
| 920-452 | WISCONSIN BELL INC | 9327 | SHEBOYGAN | WI | |
| 920-453 | WISCONSIN BELL INC | 9327 | SHEBOYGAN | WI | |
| 920-455 | WISCONSIN BELL INC | 9327 | GREEN BAY | WI | |
| 920-457 | WISCONSIN BELL INC | 9327 | SHEBOYGAN | WI | |
| 920-458 | WISCONSIN BELL INC | 9327 | SHEBOYGAN | WI | |
| 920-459 | WISCONSIN BELL INC | 9327 | SHEBOYGAN | WI | |
| 920-460 | UNITED STATES CELLULAR - WI | 6274 | APPLETON | WI | |
| 920-462 | PAETEC ITEL, LLC | 829J | KAUKAUNA | WI | |
| 920-465 | WISCONSIN BELL INC | 9327 | GREEN BAY | WI | |
| 920-467 | WISCONSIN BELL INC | 9327 | SHEBOGNFLS | WI | |
| 920-468 | WISCONSIN BELL INC | 9327 | GREEN BAY | WI | |
| 920-469 | WISCONSIN BELL INC | 9327 | GREEN BAY | WI | |
| 920-470 | UNITED STATES CELLULAR - WI | 6274 | APPLETON | WI | |
| 920-474 | FRONTIER NORTH INC. - WI | 0886 | MAPLETON | WI | |
| 920-476 | LEVEL 3 TELECOM OF WISCONSIN, LP - WI | 7322 | SHEBOYGAN | WI | |
| 920-477 | FRONTIER NORTH INC. - WI | 0886 | EDEN | WI | |
| 920-478 | FRONTIER NORTH INC. - WI | 0886 | WATERLOO | WI | |
| 920-479 | CELLCO PARTNERSHIP DBA VERIZON WIRELESS - WI | 6508 | OSHKOSH | WI | |
| 920-482 | PAETEC ITEL, LLC | 829J | MANITOWOC | WI | |
| 920-484 | BRIGHTSPEED OF SOUTHERN WISCONSIN, LLC | 0931 | FALL RIVER | WI | |
| 920-485 | WISCONSIN BELL INC | 9327 | HORICON | WI | |
| 920-487 | WISCONSIN BELL INC | 9327 | ALGOMA | WI | |
| 920-488 | FRONTIER NORTH INC. - WI | 0886 | THERESA | WI | |
| 920-490 | WISCONSIN BELL INC | 9327 | GREEN BAY | WI | |
| 920-491 | WISCONSIN BELL INC | 9327 | GREEN BAY | WI | |
| 920-492 | WISCONSIN BELL INC | 9327 | GREEN BAY | WI | |
| 920-493 | NEW CELL DBA CELLCOM | 6692 | STURGEONBY | WI | |
| 920-494 | WISCONSIN BELL INC | 9327 | GREEN BAY | WI | |
| 920-495 | NEW CELL DBA CELLCOM | 6692 | STURGEONBY | WI | |
| 920-496 | WISCONSIN BELL INC | 9327 | GREEN BAY | WI | |
| 920-497 | WISCONSIN BELL INC | 9327 | GREEN BAY | WI | |
| 920-498 | WISCONSIN BELL INC | 9327 | GREEN BAY | WI | |
| 920-499 | WISCONSIN BELL INC | 9327 | GREEN BAY | WI | |
| 920-505 | ONVOY, LLC - WI | 225C | WEYAUWEGA | WI | |
| 920-509 | CELLCO PARTNERSHIP DBA VERIZON WIRELESS - WI | 6508 | OSHKOSH | 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.