All assignees
799 prefixes in 920 · initial assignments from the NANPA CO code file, 09/17/2026
| NPA-NXX | Rate center | OCN | Assigned | Pooled |
|---|---|---|---|---|
| 920-300 | CLEVELAND | 0914 | 2013-05-24 | Yes |
| 920-301 | GREEN BAY | 225C | 2016-04-27 | Yes |
| 920-302 | WAUPUN | 6508 | — | — |
| 920-303 | OSHKOSH | 9327 | — | Yes |
| 920-304 | KEWAUNEE | 6274 | — | Yes |
| 920-305 | GREEN BAY | 225C | — | Yes |
| 920-306 | BEAVER DAM | 6508 | — | Yes |
| 920-307 | WAUPUN | 225C | 2021-06-23 | Yes |
| 920-308 | FTATKINSON | 7216 | 2017-03-13 | Yes |
| 920-309 | DE PERE | 6508 | — | Yes |
| 920-310 | KEWAUNEE | 007F | 2015-04-30 | Yes |
| 920-311 | XXXXXXXXXX | MULT | — | — |
| 920-312 | OSHKOSH | 6508 | — | Yes |
| 920-313 | LOMIRA | 6529 | 2001-04-18 | Yes |
| 920-314 | COLLINS | 225C | 2020-12-21 | Yes |
| 920-315 | HUSTISFORD | 007F | 2015-06-05 | Yes |
| 920-316 | OOSTBURG | 6529 | 2001-04-18 | Yes |
| 920-317 | BEAVER DAM | 9748 | — | — |
| 920-318 | BEAVER DAM | 6529 | — | Yes |
| 920-319 | BEAVER DAM | 6534 | — | Yes |
| 920-320 | MANITOWOC | 9327 | — | Yes |
| 920-321 | GREEN BAY | 829J | — | Yes |
| 920-322 | FONDDU LAC | 520K | — | Yes |
| 920-323 | MANITOWOC | 6692 | — | — |
| 920-324 | WAUPUN | 9327 | — | — |
| 920-325 | WAUPUN | 007F | 2016-06-27 | Yes |
| 920-326 | RANDOLPH | 0931 | — | Yes |
| 920-327 | GREEN BAY | 9327 | 2002-05-28 | Yes |
| 920-328 | GREEN BAY | 5489 | — | Yes |
| 920-329 | GREEN LAKE | 6534 | — | Yes |
| 920-330 | DE PERE | 9327 | — | — |
| 920-331 | SHEBOYGAN | 5562 | — | Yes |
| 920-332 | BRANDON | 7216 | — | Yes |
| 920-333 | STURGEONBY | 5562 | 2002-11-20 | Yes |
| 920-334 | SHEBOYGAN | 6692 | — | — |
| 920-335 | SHEBOGNFLS | 225C | — | Yes |
| 920-336 | DE PERE | 9327 | — | — |
| 920-337 | DE PERE | 9327 | — | — |
| 920-338 | DE PERE | 9327 | — | — |
| 920-339 | DE PERE | 9327 | — | — |
| 920-340 | CHILTON | 9759 | 2005-10-04 | Yes |
| 920-341 | CLYMAN | 5489 | 2001-06-28 | Yes |
| 920-342 | WATERTOWN | 6508 | 2001-06-05 | — |
| 920-343 | DE PERE | 9327 | 2009-10-12 | Yes |
| 920-344 | BEAVER DAM | 6508 | 2001-06-05 | — |
| 920-345 | WAUPUN | 7216 | — | Yes |
| 920-346 | BRANDON | 0877 | — | Yes |
| 920-347 | DE PERE | 520K | — | Yes |
| 920-348 | CAMBRIA | 0931 | — | Yes |
| 920-349 | HUSTISFORD | 0886 | — | Yes |
| 920-350 | COLUMBUS | 792K | 2005-01-27 | Yes |
| 920-351 | DE PERE | 829J | — | Yes |
| 920-352 | VAN DYNE | 516C | 2011-02-21 | Yes |
| 920-353 | THERESA | 506J | 2023-06-09 | Yes |
| 920-354 | BERLIN | 5489 | 2004-04-16 | Yes |
| 920-355 | MAPLETON | 0886 | 2001-06-18 | Yes |
| 920-356 | BEAVER DAM | 9327 | — | Yes |
| 920-357 | DE PERE | 7216 | 2021-03-02 | Yes |
| 920-358 | APPLETON | 516C | 2008-03-04 | Yes |
| 920-359 | NEW LONDON | 6534 | — | — |
| 920-360 | GREEN BAY | 6274 | — | Yes |
| 920-361 | BERLIN | 0924 | — | Yes |
| 920-362 | GREEN BAY | 6274 | — | Yes |
| 920-363 | BAILEYSHBR | 792K | 2001-06-18 | Yes |
| 920-364 | APPLETON | 793K | — | Yes |
| 920-365 | ALGOMA | 9327 | 2001-06-18 | Yes |
| 920-366 | GREEN BAY | 6274 | — | Yes |
| 920-367 | DENMARK | 5489 | 2001-08-12 | Yes |
| 920-368 | NEOSHO | 0886 | 2001-06-18 | Yes |
| 920-369 | GREEN LAKE | 6534 | — | Yes |
| 920-370 | GREEN BAY | 6274 | — | Yes |
| 920-371 | GREEN BAY | 6529 | — | Yes |
| 920-372 | KAUKAUNA | 6274 | — | Yes |
| 920-373 | ABRAMS | 6692 | — | — |
| 920-374 | MANITOWOC | 6529 | — | Yes |
| 920-375 | FONDDU LAC | 6529 | — | Yes |
| 920-376 | OSHKOSH | 5562 | — | Yes |
| 920-377 | SHEBOYGAN | 5562 | — | Yes |
| 920-378 | APPLETON | 5562 | — | Yes |
| 920-379 | OSHKOSH | 6508 | — | — |
| 920-380 | APPLETON | 9327 | — | — |
| 920-381 | APPLETON | 6508 | 2017-06-26 | Yes |
| 920-382 | BEAVER DAM | 6274 | 2002-01-09 | Yes |
| 920-383 | NEENAH | 6183 | 2004-03-17 | Yes |
| 920-384 | GREEN BAY | 321J | 2020-10-02 | Yes |
| 920-385 | OSHKOSH | 793K | 2002-08-29 | Yes |
| 920-386 | JUNEAU | 9327 | — | Yes |
| 920-387 | MAYVILLE | 9327 | — | Yes |
| 920-388 | KEWAUNEE | 9327 | — | Yes |
| 920-389 | NEW LONDON | 6534 | — | Yes |
| 920-390 | WATERTOWN | 6534 | — | Yes |
| 920-391 | GREEN BAY | 9327 | — | Yes |
| 920-392 | BEAVER DAM | 6508 | — | Yes |
| 920-393 | GREEN BAY | 793K | 2010-11-30 | Yes |
| 920-394 | KINGSTON | 1159 | — | Yes |
| 920-395 | SHEBOYGAN | 9327 | 2001-06-18 | Yes |
| 920-396 | GREEN BAY | 6534 | 2017-07-26 | Yes |
| 920-397 | FTATKINSON | 6534 | 2001-10-02 | Yes |
| 920-398 | MARKESAN | 1159 | — | Yes |
| 920-399 | OCONTO FLS | 375F | 2013-02-13 | Yes |
These are initial assignees from NANPA CO-code records — because of number portability, the current serving carrier of individual numbers may differ. Bulk export requires a membership.