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
Sep 2026
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Oct 2025
| Assigned | NPA-NXX | Assignee | OCN | Rate center | State |
|---|---|---|---|---|---|
| 920-511 | MULTIPLE OCN LISTING | MULT | XXXXXXXXXX | WI | |
| 920-516 | TWC IP ENABLED SERVICES, LLC | 793K | OCONTO | WI | |
| 920-517 | CELLCO PARTNERSHIP DBA VERIZON WIRELESS - WI | 6508 | FONDDU LAC | WI | |
| 920-521 | LEVEL 3 COMMUNICATIONS, LLC - WI | 5489 | NEENAH | WI | |
| 920-525 | BRIGHTSPEED OF CENTRAL WISCONSIN, LLC | 1159 | NICHOLS | WI | |
| 920-526 | FRONTIER NORTH INC. - WI | 0886 | GREENBUSH | WI | |
| 920-527 | WISCONSIN BELL INC | 9327 | OSHKOSH | WI | |
| 920-528 | FRONTIER NORTH INC. - WI | 0886 | CASCADE | WI | |
| 920-532 | WISCONSIN BELL INC | 9327 | WRIGHTSTN | WI | |
| 920-533 | FRONTIER NORTH INC. - WI | 0886 | CAMPBELSPT | WI | |
| 920-538 | UNITED STATES CELLULAR - WI | 6274 | NEW LONDON | WI | |
| 920-539 | CELLCO PARTNERSHIP DBA VERIZON WIRELESS - WI | 6508 | FONDDU LAC | WI | |
| 920-544 | TWC IP ENABLED SERVICES, LLC | 793K | GREEN BAY | WI | |
| 920-553 | LAKEFIELD TELEPHONE COMPANY, LLC | 0148 | TWO RIVERS | WI | |
| 920-554 | AMERICAN MESSAGING SERVICES, LLC | 9748 | APPLETON | WI | |
| 920-555 | MULTIPLE OCN LISTING | MULT | DIR ASST | WI | |
| 920-556 | AMERICAN MESSAGING SERVICES, LLC | 9748 | GREEN BAY | WI | |
| 920-559 | UNITED STATES CELLULAR - WI | 6274 | STURGEONBY | WI | |
| 920-563 | WISCONSIN BELL INC | 9327 | FTATKINSON | WI | |
| 920-564 | FRONTIER NORTH INC. - WI | 0886 | OOSTBURG | WI | |
| 920-565 | EASTCOAST TELECOM, INC. | 0914 | HOWARDSGRV | WI | |
| 920-566 | BRIGHTSPEED OF NORTH CENTRAL WISCONSIN, LLC | 0924 | REDGRANITE | WI | |
| 920-567 | PAETEC ITEL, LLC | 829J | WATERTOWN | WI | |
| 920-568 | WISCONSIN BELL INC | 9327 | FTATKINSON | WI | |
| 920-570 | CELLCO PARTNERSHIP DBA VERIZON WIRELESS - WI | 6508 | APPLETON | WI | |
| 920-571 | T-MOBILE USA, INC. | 6529 | MANITOWOC | WI | |
| 920-572 | CELLCO PARTNERSHIP DBA VERIZON WIRELESS - WI | 6508 | APPLETON | WI | |
| 920-574 | LEVEL 3 COMMUNICATIONS, LLC - WI | 5489 | APPLETON | WI | |
| 920-576 | AMERICAN MESSAGING SERVICES, LLC | 9748 | SHEBOYGAN | WI | |
| 920-577 | AMERICAN MESSAGING SERVICES, LLC | 9748 | SHEBOYGAN | WI | |
| 920-578 | NEW CINGULAR WIRELESS PCS, LLC - IL | 6534 | MARKESAN | WI | |
| 920-579 | CELLCO PARTNERSHIP DBA VERIZON WIRELESS - WI | 6508 | FONDDU LAC | WI | |
| 920-582 | WISCONSIN BELL INC | 9327 | WINNECONNE | WI | |
| 920-583 | FRONTIER NORTH INC. - WI | 0886 | OAKFIELD | WI | |
| 920-584 | NEW CINGULAR WIRELESS PCS, LLC - IL | 6534 | MARKESAN | WI | |
| 920-585 | CELLCO PARTNERSHIP DBA VERIZON WIRELESS - WI | 6508 | APPLETON | WI | |
| 920-586 | AMERICAN MESSAGING SERVICES, LLC | 9748 | APPLETON | WI | |
| 920-589 | BRIGHTSPEED OF CENTRAL WISCONSIN, LLC | 1159 | PICKETT | WI | |
| 920-592 | WISCONSIN BELL INC | 9327 | GREEN BAY | WI | |
| 920-596 | MANAWA TEL. CO., INC. | 0905 | MANAWA | WI | |
| 920-604 | NEW CELL DBA CELLCOM | 6692 | ABRAMS | WI | |
| 920-605 | T-MOBILE USA, INC. | 6529 | JEFFERSON | WI | |
| 920-606 | NEW CELL DBA CELLCOM | 6692 | GREEN BAY | WI | |
| 920-609 | NEW CELL DBA CELLCOM | 6692 | GREEN BAY | WI | |
| 920-611 | MULTIPLE OCN LISTING | MULT | XXXXXXXXXX | WI | |
| 920-613 | NEW CELL DBA CELLCOM | 6692 | GREEN BAY | WI | |
| 920-614 | ONVOY, LLC - WI | 225C | RIO | WI | |
| 920-615 | NEW CELL DBA CELLCOM | 6692 | GREEN BAY | WI | |
| 920-616 | SPOK, INC. | 6630 | APPLETON | WI | |
| 920-617 | NET LEC, INC. | 6183 | 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.