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 |
|---|---|---|---|---|---|
| 920-208 | WISCONSIN BELL INC | 9327 | SHEBOYGAN | WI | |
| 920-209 | UNITED STATES CELLULAR - WI | 6274 | APPLETON | WI | |
| 920-210 | UNITED STATES CELLULAR - WI | 6274 | BEAVER DAM | WI | |
| 920-211 | MULTIPLE OCN LISTING | MULT | XXXXXXXXXX | WI | |
| 920-212 | CELLCO PARTNERSHIP DBA VERIZON WIRELESS - WI | 6508 | MAYVILLE | WI | |
| 920-213 | CELLCO PARTNERSHIP DBA VERIZON WIRELESS - WI | 6508 | APPLETON | WI | |
| 920-214 | CELLCO PARTNERSHIP DBA VERIZON WIRELESS - WI | 6508 | MAYVILLE | WI | |
| 920-215 | WISCONSIN BELL INC | 9327 | NEENAH | WI | |
| 920-217 | T-MOBILE USA, INC. | 6529 | GREEN BAY | WI | |
| 920-218 | AMERICAN MESSAGING SERVICES, LLC | 9748 | MANITOWOC | WI | |
| 920-219 | CELLCO PARTNERSHIP DBA VERIZON WIRELESS - WI | 6508 | BEAVER DAM | WI | |
| 920-220 | METROPCS, INC. | 5562 | JOHNSONCRK | WI | |
| 920-222 | T-MOBILE USA, INC. | 6529 | LAKE MILLS | WI | |
| 920-223 | WISCONSIN BELL INC | 9327 | OSHKOSH | WI | |
| 920-224 | NET LEC, INC. | 6183 | APPLETON | WI | |
| 920-225 | WISCONSIN BELL INC | 9327 | APPLETON | WI | |
| 920-226 | NEW CINGULAR WIRELESS PCS, LLC - IL | 6534 | SHEBOYGAN | WI | |
| 920-227 | LEVEL 3 COMMUNICATIONS, LLC - WI | 5489 | GREEN BAY | WI | |
| 920-228 | NEW CELL DBA CELLCOM | 6692 | SEYMOUR | WI | |
| 920-229 | UNITED STATES CELLULAR - WI | 6274 | GREEN LAKE | WI | |
| 920-231 | WISCONSIN BELL INC | 9327 | OSHKOSH | WI | |
| 920-232 | WISCONSIN BELL INC | 9327 | OSHKOSH | WI | |
| 920-233 | WISCONSIN BELL INC | 9327 | OSHKOSH | WI | |
| 920-235 | WISCONSIN BELL INC | 9327 | OSHKOSH | WI | |
| 920-236 | WISCONSIN BELL INC | 9327 | OSHKOSH | WI | |
| 920-237 | WISCONSIN BELL INC | 9327 | OSHKOSH | WI | |
| 920-238 | UNITED STATES CELLULAR - WI | 6274 | FONDDU LAC | WI | |
| 920-239 | PAETEC ITEL, LLC | 829J | WAUPUN | WI | |
| 920-241 | CELLCO PARTNERSHIP DBA VERIZON WIRELESS - WI | 6508 | DE PERE | WI | |
| 920-242 | METROPCS, INC. | 5562 | MANITOWOC | WI | |
| 920-243 | LEVEL 3 COMMUNICATIONS, LLC - WI | 5489 | APPLETON | WI | |
| 920-244 | MANAWA TEL. CO., INC. | 0905 | OGDENSBURG | WI | |
| 920-245 | TELEPORT COMMUNICATIONS AMERICA, LLC WI | 7216 | WATERTOWN | WI | |
| 920-246 | CELLCO PARTNERSHIP DBA VERIZON WIRELESS - WI | 6508 | GREEN BAY | WI | |
| 920-248 | METROPCS, INC. | 5562 | WATERTOWN | WI | |
| 920-249 | NEW CINGULAR WIRELESS PCS, LLC - IL | 6534 | NEW LONDON | WI | |
| 920-250 | NEW CINGULAR WIRELESS PCS, LLC - IL | 6534 | NEW LONDON | WI | |
| 920-251 | T-MOBILE USA, INC. | 6529 | FONDDU LAC | WI | |
| 920-253 | UNITED STATES CELLULAR - WI | 6274 | WATERTOWN | WI | |
| 920-254 | METROPCS, INC. | 5562 | SHEBOYGAN | WI | |
| 920-257 | WISCONSIN BELL INC | 9327 | APPLETON | WI | |
| 920-258 | SPOK, INC. | 6630 | OSHKOSH | WI | |
| 920-261 | WISCONSIN BELL INC | 9327 | WATERTOWN | WI | |
| 920-262 | WISCONSIN BELL INC | 9327 | WATERTOWN | WI | |
| 920-263 | NEW CELL DBA CELLCOM | 6692 | FONDDU LAC | WI | |
| 920-264 | LEVEL 3 COMMUNICATIONS, LLC - WI | 5489 | GREEN BAY | WI | |
| 920-266 | WISCONSIN BELL INC | 9327 | FONDDU LAC | WI | |
| 920-269 | FRONTIER NORTH INC. - WI | 0886 | LOMIRA | WI | |
| 920-271 | TDS METROCOM, LLC | 520K | GREEN BAY | WI | |
| 920-272 | 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.