All assignees
799 prefixes in 608 · initial assignments from the NANPA CO code file, 09/17/2026
| NPA-NXX | Rate center | OCN | Assigned | Pooled |
|---|---|---|---|---|
| 608-400 | MADISON | 225C | 2017-09-28 | Yes |
| 608-401 | MAZOMANIE | 792K | — | Yes |
| 608-402 | BARABOO | 698E | 2010-07-23 | Yes |
| 608-403 | ADAMS | 6274 | — | Yes |
| 608-404 | WISCONDLLS | 6508 | 2003-01-15 | Yes |
| 608-405 | MADISON | 073H | 2016-12-05 | Yes |
| 608-406 | LA CROSSE | 6508 | 2004-05-05 | Yes |
| 608-407 | DODGEVILLE | 7229 | 2004-07-29 | Yes |
| 608-408 | BRIGGSVL | 6508 | 2005-01-12 | Yes |
| 608-409 | ARCADIA | 225C | — | Yes |
| 608-410 | MIDDLETON | 0881 | 2004-06-10 | Yes |
| 608-411 | XXXXXXXXXX | MULT | — | — |
| 608-412 | PRARIDCHIN | 6274 | 2003-10-01 | Yes |
| 608-413 | CROSS PL | 792K | 2004-11-02 | Yes |
| 608-414 | MINERAL PT | 225C | 2022-02-04 | Yes |
| 608-415 | REEDSBURG | 6274 | 2003-10-02 | Yes |
| 608-416 | MADISON | 5489 | 2014-10-03 | Yes |
| 608-417 | MADISON | 508J | 2007-02-23 | Yes |
| 608-418 | ALMA | 6508 | 2012-09-04 | Yes |
| 608-419 | PACKWAUKEE | 6508 | 2013-08-21 | Yes |
| 608-420 | ALBANY | 792K | 2008-04-09 | Yes |
| 608-421 | MADISON | 551G | 2013-03-08 | Yes |
| 608-422 | MADISON | 6274 | 2014-02-27 | Yes |
| 608-423 | CAMBRIDGE | 0886 | — | Yes |
| 608-424 | BELLEVILLE | 0886 | — | Yes |
| 608-425 | DODGEVILLE | 6508 | — | Yes |
| 608-426 | MONROE | 6274 | — | Yes |
| 608-427 | CAMPDOUGLS | 0900 | — | — |
| 608-428 | PRARIDCHIN | 6508 | 2002-10-10 | Yes |
| 608-429 | PARDEEVL | 0886 | — | Yes |
| 608-430 | ETTRICK | 225C | — | Yes |
| 608-431 | FOUNTAINCY | 225C | — | Yes |
| 608-432 | WISCONDLLS | 6274 | — | Yes |
| 608-433 | LA CROSSE | 5489 | 2002-03-14 | Yes |
| 608-434 | BARABOO | 6274 | 2002-03-13 | Yes |
| 608-435 | WILTON | 0913 | — | Yes |
| 608-436 | JANESVILLE | 6534 | 2001-02-14 | Yes |
| 608-437 | MOUNTHOREB | 0916 | — | — |
| 608-438 | MADISON | 6274 | 2002-01-15 | Yes |
| 608-439 | SOUTHWAYNE | 0963 | — | Yes |
| 608-440 | MADISON | 7216 | 2014-10-06 | Yes |
| 608-441 | MADISON | 520K | — | — |
| 608-442 | MADISON | 520K | 2001-05-08 | — |
| 608-443 | MADISON | 520K | 2002-02-15 | Yes |
| 608-444 | MADISON | 6274 | — | Yes |
| 608-445 | MADISON | 6274 | 2001-04-03 | Yes |
| 608-446 | MADISON | 520K | — | — |
| 608-447 | BRODHEAD | 007F | 2014-09-17 | Yes |
| 608-448 | BARABOO | 6529 | 2001-08-03 | Yes |
| 608-449 | JANESVILLE | 6508 | 2002-08-26 | — |
| 608-450 | OXFORD | 6274 | 2008-02-11 | Yes |
| 608-451 | BANGOR | 792K | 2005-12-02 | Yes |
| 608-452 | COONVALLEY | 0868 | — | — |
| 608-453 | SUNPRAIRIE | 225C | 2020-12-21 | Yes |
| 608-454 | OREGON | 225C | 2020-12-21 | Yes |
| 608-455 | BROOKLYN | 0886 | — | Yes |
| 608-456 | ORFORDVL | 225C | 2020-12-21 | Yes |
| 608-457 | STODDARD | 0868 | — | — |
| 608-458 | MADISON | 9327 | 2001-08-21 | — |
| 608-459 | SPG GREEN | 6274 | 2009-08-14 | Yes |
| 608-460 | SAUK CITY | 7229 | 2016-08-23 | Yes |
| 608-461 | BANGOR | 6508 | 2003-07-15 | Yes |
| 608-462 | ELROY | 0922 | — | Yes |
| 608-463 | KENDALL | 0924 | — | Yes |
| 608-464 | WONEWOC | 0922 | — | — |
| 608-465 | WOODFORD | 0963 | — | Yes |
| 608-466 | BELOIT | 5489 | 2002-05-13 | Yes |
| 608-467 | MADISON | 5489 | 2002-05-13 | Yes |
| 608-468 | FOUNTAINCY | 1159 | 2001-06-12 | Yes |
| 608-469 | MADISON | 6508 | 2002-08-28 | — |
| 608-470 | EDGERTON | 225C | 2018-07-23 | Yes |
| 608-471 | MADISON | 227F | — | Yes |
| 608-472 | ADAMS | 6534 | — | Yes |
| 608-473 | BELOIT | 7216 | 2003-05-07 | Yes |
| 608-474 | ADAMS | 6534 | — | Yes |
| 608-475 | RICHLD CTR | 6508 | 2003-05-14 | Yes |
| 608-476 | STEUBEN | 0922 | — | Yes |
| 608-477 | BARABOO | 6508 | 2003-07-11 | Yes |
| 608-478 | SUNPRAIRIE | 5489 | — | Yes |
| 608-479 | HILLSBORO | 6508 | 2003-08-21 | Yes |
| 608-480 | STOUGHTON | 6274 | 2016-06-08 | Yes |
| 608-481 | BELOIT | 6508 | 2002-08-27 | Yes |
| 608-482 | DARLINGTON | 6274 | 2002-07-17 | Yes |
| 608-483 | CHASEBURG | 0868 | — | — |
| 608-484 | GALESVILLE | 6274 | 2002-07-17 | Yes |
| 608-485 | BOSCOBEL | 6274 | 2002-07-17 | Yes |
| 608-486 | BANGOR | 1159 | — | Yes |
| 608-487 | SPARTA | 6274 | 2002-04-29 | Yes |
| 608-488 | MELROSE | 1159 | — | — |
| 608-489 | HILLSBORO | 0892 | — | — |
| 608-490 | EVANSVILLE | 6274 | 2007-03-21 | Yes |
| 608-491 | SHULLSBURG | 983F | 2006-07-21 | Yes |
| 608-492 | STOUGHTON | 5489 | 2006-02-10 | Yes |
| 608-493 | MERRIMAC | 0886 | — | Yes |
| 608-494 | MONTELLO | 6534 | — | Yes |
| 608-495 | REEDSBURG | 6508 | 2003-07-10 | Yes |
| 608-496 | CAMBRIDGE | 007F | 2014-12-04 | Yes |
| 608-497 | VERONA | 792K | 2006-02-01 | Yes |
| 608-498 | LA CROSSE | 5489 | 2003-04-17 | Yes |
| 608-499 | HAZELGREEN | 983F | 2010-06-30 | 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.