Verified Nov 1, 2026 · Source: NANPA CO Code Assignment Records
Area code 608 prefixes
785 of the 786 possible NXX blocks are assigned in area code 608 (99.9% of capacity), spread across 159 rate centers and 73 holders. The largest holders are WISCONSIN BELL INC (80 blocks, 10.2%), UNITED STATES CELLULAR - WI (76 blocks, 9.7%), CELLCO PARTNERSHIP DBA VERIZON WIRELESS - WI (54 blocks, 6.9%). Grouped by brand, AT&T accounts for 150 blocks; brand-attributable holders cover 72% of the code, and the rest are CLECs, VoIP wholesalers and regional carriers that trade under their own names. The assignment records here run from 2001-01-15 to 2025-08-21, with 33 blocks handed out in 2020 alone. 588 blocks (75%) are in thousands-block pooling, meaning the block is shared between carriers in 1,000-number lots rather than held whole – which is why a single NXX can serve several carriers at once. 124 were growth assignments – additional blocks to a carrier that had already filled its earlier ones.
785 assigned blocks of 786
159 rate centers
73 holders of record
75% in thousands-block pooling
Largest holders in 608
| Holder of record, as NANPA names it | Brand | Blocks | Share |
|---|---|---|---|
| WISCONSIN BELL INC | AT&T | 80 | 10.2% |
| UNITED STATES CELLULAR - WI | – | 76 | 9.7% |
| CELLCO PARTNERSHIP DBA VERIZON WIRELESS - WI | Verizon | 54 | 6.9% |
| FRONTIER NORTH INC. - WI | Frontier | 53 | 6.8% |
| ONVOY, LLC - WI | Onvoy | 50 | 6.4% |
| NEW CINGULAR WIRELESS PCS, LLC - IL | AT&T | 46 | 5.9% |
| T-MOBILE USA, INC. | T-Mobile | 28 | 3.6% |
| CHARTER IP ENABLED SERVICES, LLC | Charter | 25 | 3.2% |
| BRIGHTSPEED OF CENTRAL WISCONSIN, LLC | Brightspeed | 24 | 3.1% |
| LEVEL 3 COMMUNICATIONS, LLC - WI | Lumen | 23 | 2.9% |
| TDS METROCOM, LLC | TDS | 22 | 2.8% |
| TON80 COMMUNICATIONS, LLC | – | 22 | 2.8% |
Names are printed as they appear in the assignment records, which is the legal entity rather than the brand. Holding a block is not the same as serving the numbers in it: portability moves numbers between carriers and pooling splits a block between several.
Rate centers with their own page
Rate centers where at least three blocks are assigned, excluding the numbered metro zone codes. The remainder are in the full table below.
MADISON 197JANESVILLE 45LA CROSSE 41BELOIT 25MIDDLETON 17STOUGHTON 13BARABOO 12MONROE 11TOMAH 10DODGEVILLE 9PORTAGE 9PLATTEVL 8WISCONDLLS 7SPARTA 7SUNPRAIRIE 7MAUSTON 7RICHLD CTR 7REEDSBURG 7VERONA 7PRARIDCHIN 6ADAMS 6OREGON 5WEST SALEM 5SAUK CITY 5EDGERTON 5EVANSVILLE 5VIROQUA 5ARCADIA 4BRIGGSVL 4BOSCOBEL 4HOLMEN 4BRODHEAD 4BANGOR 4GALESVILLE 4MCFARLAND 4WAUNAKEE 4DE FOREST 4WESTFIELD 3MONTELLO 3BLAIR 3MELROSE 3MINERAL PT 3CROSS PL 3PACKWAUKEE 3CAMBRIDGE 3CAMPDOUGLS 3FOUNTAINCY 3SOUTHWAYNE 3SPG GREEN 3ELROY 3WONEWOC 3DARLINGTON 3POYNETTE 3NO FREEDOM 3NEW GLARUS 3NECEDAH 3MILTON 3LODI 3VIOLA 3WESTBY 3
All 785 assigned blocks
One row per NXX. “Pooled” means carriers draw 1,000-number lots from the block rather than holding all 10,000, so a pooled prefix can belong to several carriers at once. “Not in service” means assigned but not yet open for calls – a caller ID from one of those is necessarily spoofed. The holder column gives the brand where the legal entity maps to one; the full legal names are in the holders table above, exactly as NANPA records them.
| Prefix | Holder of record | Rate center | Assigned | Pooled | In service |
|---|---|---|---|---|---|
| 608-200 | FRACTEL, LLC | BELOIT | 2020-09-24 | yes | yes |
| 608-201 | AT&T | JANESVILLE | – | – | yes |
| 608-202 | American Messaging | JANESVILLE | – | – | yes |
| 608-203 | TDS | MIDDLETON | – | yes | yes |
| 608-204 | TDS | MADISON | – | – | yes |
| 608-205 | TDS | STOUGHTON | – | yes | yes |
| 608-206 | UNITED STATES CELLULAR - WI | MADISON | – | yes | yes |
| 608-207 | T-Mobile | BELOIT | – | yes | yes |
| 608-208 | T-Mobile | JANESVILLE | – | yes | yes |
| 608-209 | T-Mobile | MADISON | – | yes | yes |
| 608-210 | TDS | MADISON | – | yes | yes |
| 608-212 | UNITED STATES CELLULAR - WI | MADISON | – | yes | yes |
| 608-213 | T-Mobile | MADISON | – | yes | yes |
| 608-214 | UNITED STATES CELLULAR - WI | MONROE | – | yes | yes |
| 608-215 | Verizon | MADISON | – | – | yes |
| 608-216 | AT&T | MADISON | – | yes | yes |
| 608-217 | T-Mobile | MADISON | – | yes | yes |
| 608-218 | AT&T | MADISON | – | yes | yes |
| 608-219 | UNITED STATES CELLULAR - WI | MADISON | – | yes | yes |
| 608-220 | UNITED STATES CELLULAR - WI | MADISON | – | yes | yes |
| 608-221 | AT&T | MADISON | – | – | yes |
| 608-222 | AT&T | MADISON | – | – | yes |
| 608-223 | AT&T | MADISON | – | – | yes |
| 608-224 | AT&T | MADISON | – | yes | yes |
| 608-225 | UNITED STATES CELLULAR - WI | MADISON | – | yes | yes |
| 608-226 | AT&T | MADISON | – | – | yes |
| 608-227 | Lumen | MADISON | – | yes | yes |
| 608-228 | UNITED STATES CELLULAR - WI | MADISON | – | yes | yes |
| 608-229 | Lumen | MADISON | – | yes | yes |
| 608-230 | TDS | MADISON | – | yes | yes |
| 608-231 | AT&T | MADISON | – | – | yes |
| 608-232 | AT&T | MADISON | – | yes | yes |
| 608-233 | AT&T | MADISON | – | – | yes |
| 608-234 | AT&T | MADISON | – | yes | yes |
| 608-235 | UNITED STATES CELLULAR - WI | MADISON | – | yes | yes |
| 608-236 | AT&T | MADISON | – | yes | yes |
| 608-237 | AT&T | MADISON | – | yes | yes |
| 608-238 | AT&T | MADISON | – | – | yes |
| 608-239 | T-Mobile | MADISON | – | yes | yes |
| 608-240 | AT&T | MADISON | – | – | yes |
| 608-241 | AT&T | MADISON | – | – | yes |
| 608-242 | AT&T | MADISON | – | – | yes |
| 608-243 | AT&T | MADISON | – | – | yes |
| 608-244 | AT&T | MADISON | – | – | yes |
| 608-245 | AT&T | MADISON | – | – | yes |
| 608-246 | AT&T | MADISON | – | – | yes |
| 608-247 | UNITED STATES CELLULAR - WI | JANESVILLE | – | yes | yes |
| 608-248 | COCHRANE COOP. TEL. CO. | COCHRANE | – | – | yes |
| 608-249 | AT&T | MADISON | – | – | yes |
| 608-250 | AT&T | MADISON | – | yes | yes |
| 608-251 | AT&T | MADISON | – | – | yes |
| 608-252 | AT&T | MADISON | – | – | yes |
| 608-253 | Frontier | WISCONDLLS | – | yes | yes |
| 608-254 | Frontier | WISCONDLLS | – | yes | yes |
| 608-255 | AT&T | MADISON | – | – | yes |
| 608-256 | AT&T | MADISON | – | – | yes |
| 608-257 | AT&T | MADISON | – | – | yes |
| 608-258 | AT&T | MADISON | – | – | yes |
| 608-259 | AT&T | MADISON | – | yes | yes |
| 608-260 | AT&T | MADISON | – | yes | yes |
| 608-261 | AT&T | MADISON | – | – | yes |
| 608-262 | AT&T | MADISON | – | – | yes |
| 608-263 | AT&T | MADISON | – | – | yes |
| 608-264 | AT&T | MADISON | – | – | yes |
| 608-265 | AT&T | MADISON | – | – | yes |
| 608-266 | AT&T | MADISON | – | – | yes |
| 608-267 | AT&T | MADISON | – | – | yes |
| 608-268 | Windstream | MADISON | – | – | yes |
| 608-269 | Brightspeed | SPARTA | – | – | yes |
| 608-270 | AT&T | MADISON | – | yes | yes |
| 608-271 | AT&T | MADISON | – | – | yes |
| 608-272 | Brightspeed | CATARACT | – | yes | yes |
| 608-273 | AT&T | MADISON | – | – | yes |
| 608-274 | AT&T | MADISON | – | – | yes |
| 608-275 | AT&T | MADISON | – | – | yes |
| 608-276 | AT&T | MADISON | – | – | yes |
| 608-277 | AT&T | MADISON | – | – | yes |
| 608-278 | AT&T | MADISON | – | – | yes |
| 608-279 | UNITED STATES CELLULAR - WI | MADISON | – | yes | yes |
| 608-280 | AT&T | MADISON | – | yes | yes |
| 608-281 | AT&T | MADISON | – | – | yes |
| 608-282 | AT&T | MADISON | – | yes | yes |
| 608-283 | AT&T | MADISON | – | yes | yes |
| 608-284 | AT&T | MADISON | – | yes | yes |
| 608-285 | AT&T | MADISON | – | yes | yes |
| 608-286 | AT&T | MADISON | – | yes | yes |
| 608-287 | AT&T | MADISON | – | yes | yes |
| 608-288 | AT&T | MADISON | – | – | yes |
| 608-289 | UNITED STATES CELLULAR - WI | JANESVILLE | – | yes | yes |
| 608-290 | UNITED STATES CELLULAR - WI | JANESVILLE | – | yes | yes |
| 608-291 | Charter | OREGON | – | yes | yes |
| 608-292 | NUSO, LLC | MADISON | 2020-08-03 | yes | yes |
| 608-293 | Verizon | MONROE | – | yes | yes |
| 608-294 | AT&T | MADISON | – | yes | yes |
| 608-295 | UNITED STATES CELLULAR - WI | JANESVILLE | – | yes | yes |
| 608-296 | Frontier | WESTFIELD | – | yes | yes |
| 608-297 | Frontier | MONTELLO | – | yes | yes |
| 608-298 | AT&T | MADISON | – | yes | yes |
| 608-299 | Windstream | BELOIT | – | yes | yes |
| 608-300 | FRACTEL, LLC | BLANCHADVL | 2020-10-16 | yes | yes |
| 608-301 | AT&T | MADISON | – | yes | yes |
| 608-302 | AT&T | JANESVILLE | – | yes | yes |
| 608-303 | Spok | MADISON | – | – | yes |
| 608-304 | T-Mobile | LA CROSSE | – | yes | yes |
| 608-305 | Windstream | JANESVILLE | 2001-02-15 | yes | yes |
| 608-306 | Verizon | PRARIDCHIN | 2001-02-15 | yes | yes |
| 608-307 | Spok | JANESVILLE | 2001-04-18 | – | yes |
| 608-308 | TDS | MADISON | – | – | yes |
| 608-309 | Brightspeed | BLAIR | 2001-05-24 | yes | yes |
| 608-310 | TDS | MADISON | – | yes | yes |
| 608-312 | T-Mobile | BELOIT | – | yes | yes |
| 608-313 | TDS | BELOIT | – | yes | yes |
| 608-314 | TDS | JANESVILLE | – | yes | yes |
| 608-315 | T-Mobile | TOMAH | – | yes | yes |
| 608-316 | AT&T | MADISON | – | yes | yes |
| 608-317 | UNITED STATES CELLULAR - WI | LA CROSSE | – | yes | yes |
| 608-318 | Charter | SUNPRAIRIE | 2004-02-03 | yes | yes |
| 608-319 | Frontier | DODGEVILLE | 2001-05-11 | yes | yes |
| 608-320 | AT&T | MADISON | – | yes | yes |
| 608-321 | TDS | MADISON | – | – | yes |
| 608-322 | AT&T | JANESVILLE | – | yes | yes |
| 608-323 | Brightspeed | ARCADIA | – | yes | yes |
| 608-324 | UTELCO, INC. | MONROE | – | – | yes |
| 608-325 | UTELCO, INC. | MONROE | – | – | yes |
| 608-326 | Lumen | PRARIDCHIN | – | – | yes |
| 608-327 | Lumen | MADISON | – | yes | yes |
| 608-328 | UTELCO, INC. | MONROE | – | – | yes |
| 608-329 | UTELCO, INC. | MONROE | – | – | yes |
| 608-330 | UNITED STATES CELLULAR - WI | PLATTEVL | 2004-05-24 | yes | yes |
| 608-331 | Verizon | PLATTEVL | – | yes | yes |
| 608-332 | AT&T | MADISON | – | – | yes |
| 608-333 | TDS | MADISON | 2004-06-17 | yes | yes |
| 608-334 | AT&T | MADISON | – | – | yes |
| 608-335 | AT&T | MADISON | – | – | yes |
| 608-336 | UTELCO, INC. | MONROE | 2011-08-19 | yes | yes |
| 608-337 | Brightspeed | ONTARIO | – | yes | yes |
| 608-338 | AT&T | MADISON | – | yes | yes |
| 608-339 | Frontier | ADAMS | – | yes | yes |
| 608-340 | Frontier | BRIGGSVL | 2001-05-11 | yes | yes |
| 608-341 | UNITED STATES CELLULAR - WI | DODGEVILLE | – | yes | yes |
| 608-342 | Brightspeed | PLATTEVL | – | – | yes |
| 608-343 | UNITED STATES CELLULAR - WI | TOMAH | – | yes | yes |
| 608-344 | UNITED STATES CELLULAR - WI | TOMAH | – | yes | yes |
| 608-345 | Verizon | MADISON | – | – | yes |
| 608-346 | Verizon | BELOIT | – | – | yes |
| 608-347 | Verizon | MADISON | – | – | yes |
| 608-348 | Brightspeed | PLATTEVL | – | – | yes |
| 608-349 | Brightspeed | PLATTEVL | – | – | yes |
| 608-350 | Frontier | MAUSTON | 2001-05-11 | yes | yes |
| 608-351 | T-Mobile | WEST SALEM | 2008-01-29 | yes | yes |
| 608-352 | AT&T | JANESVILLE | 2008-05-14 | yes | yes |
| 608-353 | Onvoy | MELROSE | 2023-06-22 | yes | yes |
| 608-354 | AT&T | MADISON | – | yes | yes |
| 608-355 | Brightspeed | BARABOO | – | – | yes |
| 608-356 | Brightspeed | BARABOO | – | – | yes |
| 608-357 | Lumen | PRARIDCHIN | – | – | yes |
| 608-358 | AT&T | MADISON | 2001-02-14 | – | yes |
| 608-359 | T-Mobile | JANESVILLE | – | yes | yes |
| 608-360 | Frontier | LOGANVILLE | 2001-05-11 | yes | yes |
| 608-361 | AT&T | BELOIT | – | yes | yes |
| 608-362 | AT&T | BELOIT | – | – | yes |
| 608-363 | AT&T | BELOIT | – | – | yes |
| 608-364 | AT&T | BELOIT | – | – | yes |
| 608-365 | AT&T | BELOIT | – | – | yes |
| 608-366 | Brightspeed | SPARTA | – | – | yes |
| 608-367 | STRATUS NETWORKS | BELOIT | 2020-09-08 | yes | yes |
| 608-368 | AT&T | BELOIT | – | yes | yes |
| 608-369 | UNITED STATES CELLULAR - WI | WESTFIELD | – | yes | yes |
| 608-370 | UNITED STATES CELLULAR - WI | SAUK CITY | 2001-05-11 | yes | yes |
| 608-371 | AT&T | JANESVILLE | 2001-05-09 | yes | yes |
| 608-372 | Brightspeed | TOMAH | – | – | yes |
| 608-373 | AT&T | JANESVILLE | – | yes | yes |
| 608-374 | Brightspeed | TOMAH | – | – | yes |
| 608-375 | Brightspeed | BOSCOBEL | – | – | yes |
| 608-376 | American Messaging | MADISON | – | – | yes |
| 608-377 | Verizon | TOMAH | – | yes | yes |
| 608-378 | Brightspeed | WARRENS | – | – | yes |
| 608-379 | Verizon | MOUNT HOPE | 2001-05-02 | yes | yes |
| 608-380 | MCC TELEPHONY OF THE MIDWEST, LLC - WI | PRARIDCHIN | 2012-08-21 | yes | yes |
| 608-381 | Verizon | MADISON | – | yes | yes |
| 608-382 | MICHIGAN WIRELESS, LLC DBA BUG TUSSEL WIRELESS | ADAMS | 2010-02-23 | – | yes |
| 608-383 | Frontier | RICHLD CTR | 2001-05-11 | yes | yes |
| 608-384 | AT&T | MINERAL PT | 2016-03-23 | yes | yes |
| 608-385 | T-Mobile | LA CROSSE | – | yes | yes |
| 608-386 | UNITED STATES CELLULAR - WI | LA CROSSE | – | yes | yes |
| 608-387 | Verizon | TOMAH | 2003-06-11 | yes | yes |
| 608-388 | Brightspeed | SPARTA | – | – | yes |
| 608-389 | Bandwidth | BARABOO | 2020-09-03 | yes | yes |
| 608-390 | Brightspeed | CENTERVL | 2001-05-24 | yes | yes |
| 608-391 | Verizon | BOSCOBEL | 2003-10-21 | yes | yes |
| 608-392 | Brightspeed | LA CROSSE | – | – | yes |
| 608-393 | UNITED STATES CELLULAR - WI | BARABOO | – | yes | yes |
| 608-394 | AT&T | LA CROSSE | 2020-11-23 | yes | yes |
| 608-395 | AT&T | MADISON | – | yes | yes |
| 608-396 | Brightspeed | MELROSE | 2001-05-24 | yes | yes |
| 608-397 | Verizon | LA CROSSE | – | yes | yes |
| 608-398 | AIRESPRING, INC. | MADISON | 2020-09-30 | yes | yes |
| 608-399 | Brightspeed | HOLMEN | 2001-05-16 | yes | yes |
| 608-400 | Onvoy | MADISON | 2017-09-28 | yes | yes |
| 608-401 | Charter | MAZOMANIE | – | yes | yes |
| 608-402 | MICHIGAN WIRELESS, LLC DBA BUG TUSSEL WIRELESS | BARABOO | 2010-07-23 | yes | yes |
| 608-403 | UNITED STATES CELLULAR - WI | ADAMS | – | yes | yes |
| 608-404 | Verizon | WISCONDLLS | 2003-01-15 | yes | yes |
| 608-405 | Telnyx | MADISON | 2016-12-05 | yes | yes |
| 608-406 | Verizon | LA CROSSE | 2004-05-05 | yes | yes |
| 608-407 | Verizon | DODGEVILLE | 2004-07-29 | yes | yes |
| 608-408 | Verizon | BRIGGSVL | 2005-01-12 | yes | yes |
| 608-409 | Onvoy | ARCADIA | – | yes | yes |
| 608-410 | MID-PLAINS TEL., INC. | MIDDLETON | 2004-06-10 | yes | yes |
| 608-412 | UNITED STATES CELLULAR - WI | PRARIDCHIN | 2003-10-01 | yes | yes |
| 608-413 | Charter | CROSS PL | 2004-11-02 | yes | yes |
| 608-414 | Onvoy | MINERAL PT | 2022-02-04 | yes | yes |
| 608-415 | UNITED STATES CELLULAR - WI | REEDSBURG | 2003-10-02 | yes | yes |
| 608-416 | Lumen | MADISON | 2014-10-03 | yes | yes |
| 608-417 | Lumen | MADISON | 2007-02-23 | yes | yes |
| 608-418 | Verizon | ALMA | 2012-09-04 | yes | yes |
| 608-419 | Verizon | PACKWAUKEE | 2013-08-21 | yes | yes |
| 608-420 | Charter | ALBANY | 2008-04-09 | yes | yes |
| 608-421 | NUSO, LLC | MADISON | 2013-03-08 | yes | yes |
| 608-422 | UNITED STATES CELLULAR - WI | MADISON | 2014-02-27 | yes | yes |
| 608-423 | Frontier | CAMBRIDGE | – | yes | yes |
| 608-424 | Frontier | BELLEVILLE | – | yes | yes |
| 608-425 | Verizon | DODGEVILLE | – | yes | yes |
| 608-426 | UNITED STATES CELLULAR - WI | MONROE | – | yes | yes |
| 608-427 | LEMONWEIR VALLEY TEL. CO. | CAMPDOUGLS | – | – | yes |
| 608-428 | Verizon | PRARIDCHIN | 2002-10-10 | yes | yes |
| 608-429 | Frontier | PARDEEVL | – | yes | yes |
| 608-430 | Onvoy | ETTRICK | – | yes | yes |
| 608-431 | Onvoy | FOUNTAINCY | – | yes | yes |
| 608-432 | UNITED STATES CELLULAR - WI | WISCONDLLS | – | yes | yes |
| 608-433 | Lumen | LA CROSSE | 2002-03-14 | yes | yes |
| 608-434 | UNITED STATES CELLULAR - WI | BARABOO | 2002-03-13 | yes | yes |
| 608-435 | Brightspeed | WILTON | – | yes | yes |
| 608-436 | AT&T | JANESVILLE | 2001-02-14 | yes | yes |
| 608-437 | MT. HOREB TEL. CO. | MOUNTHOREB | – | – | yes |
| 608-438 | UNITED STATES CELLULAR - WI | MADISON | 2002-01-15 | yes | yes |
| 608-439 | UTELCO, INC. | SOUTHWAYNE | – | yes | yes |
| 608-440 | AT&T | MADISON | 2014-10-06 | yes | yes |
| 608-441 | TDS | MADISON | – | – | yes |
| 608-442 | TDS | MADISON | 2001-05-08 | – | yes |
| 608-443 | TDS | MADISON | 2002-02-15 | yes | yes |
| 608-444 | UNITED STATES CELLULAR - WI | MADISON | – | yes | yes |
| 608-445 | UNITED STATES CELLULAR - WI | MADISON | 2001-04-03 | yes | yes |
| 608-446 | TDS | MADISON | – | – | yes |
| 608-447 | Bandwidth | BRODHEAD | 2014-09-17 | yes | yes |
| 608-448 | T-Mobile | BARABOO | 2001-08-03 | yes | yes |
| 608-449 | Verizon | JANESVILLE | 2002-08-26 | – | yes |
| 608-450 | UNITED STATES CELLULAR - WI | OXFORD | 2008-02-11 | yes | yes |
| 608-451 | Charter | BANGOR | 2005-12-02 | yes | yes |
| 608-452 | COON VALLEY FARMERS TEL. CO. | COONVALLEY | – | – | yes |
| 608-453 | Onvoy | SUNPRAIRIE | 2020-12-21 | yes | yes |
| 608-454 | Onvoy | OREGON | 2020-12-21 | yes | yes |
| 608-455 | Frontier | BROOKLYN | – | yes | yes |
| 608-456 | Onvoy | ORFORDVL | 2020-12-21 | yes | yes |
| 608-457 | COON VALLEY FARMERS TEL. CO. | STODDARD | – | – | yes |
| 608-458 | AT&T | MADISON | 2001-08-21 | – | yes |
| 608-459 | UNITED STATES CELLULAR - WI | SPG GREEN | 2009-08-14 | yes | yes |
| 608-460 | Verizon | SAUK CITY | 2016-08-23 | yes | yes |
| 608-461 | Verizon | BANGOR | 2003-07-15 | yes | yes |
| 608-462 | Brightspeed | ELROY | – | yes | yes |
| 608-463 | Brightspeed | KENDALL | – | yes | yes |
| 608-464 | Brightspeed | WONEWOC | – | – | yes |
| 608-465 | UTELCO, INC. | WOODFORD | – | yes | yes |
| 608-466 | Lumen | BELOIT | 2002-05-13 | yes | yes |
| 608-467 | Lumen | MADISON | 2002-05-13 | yes | yes |
| 608-468 | Brightspeed | FOUNTAINCY | 2001-06-12 | yes | yes |
| 608-469 | Verizon | MADISON | 2002-08-28 | – | yes |
| 608-470 | Onvoy | EDGERTON | 2018-07-23 | yes | yes |
| 608-471 | Peerless | MADISON | – | yes | yes |
| 608-472 | AT&T | ADAMS | – | yes | yes |
| 608-473 | AT&T | BELOIT | 2003-05-07 | yes | yes |
| 608-474 | AT&T | ADAMS | – | yes | yes |
| 608-475 | Verizon | RICHLD CTR | 2003-05-14 | yes | yes |
| 608-476 | Brightspeed | STEUBEN | – | yes | yes |
| 608-477 | Verizon | BARABOO | 2003-07-11 | yes | yes |
| 608-478 | Lumen | SUNPRAIRIE | – | yes | yes |
| 608-479 | Verizon | HILLSBORO | 2003-08-21 | yes | yes |
| 608-480 | UNITED STATES CELLULAR - WI | STOUGHTON | 2016-06-08 | yes | yes |
| 608-481 | Verizon | BELOIT | 2002-08-27 | yes | yes |
| 608-482 | UNITED STATES CELLULAR - WI | DARLINGTON | 2002-07-17 | yes | yes |
| 608-483 | COON VALLEY FARMERS TEL. CO. | CHASEBURG | – | – | yes |
| 608-484 | UNITED STATES CELLULAR - WI | GALESVILLE | 2002-07-17 | yes | yes |
| 608-485 | UNITED STATES CELLULAR - WI | BOSCOBEL | 2002-07-17 | yes | yes |
| 608-486 | Brightspeed | BANGOR | – | yes | yes |
| 608-487 | UNITED STATES CELLULAR - WI | SPARTA | 2002-04-29 | yes | yes |
| 608-488 | Brightspeed | MELROSE | – | – | yes |
| 608-489 | HILLSBORO TEL. CO., INC. | HILLSBORO | – | – | yes |
| 608-490 | UNITED STATES CELLULAR - WI | EVANSVILLE | 2007-03-21 | yes | yes |
| 608-491 | MCC TELEPHONY OF THE MIDWEST, LLC - WI | SHULLSBURG | 2006-07-21 | yes | yes |
| 608-492 | Lumen | STOUGHTON | 2006-02-10 | yes | yes |
| 608-493 | Frontier | MERRIMAC | – | yes | yes |
| 608-494 | AT&T | MONTELLO | – | yes | yes |
| 608-495 | Verizon | REEDSBURG | 2003-07-10 | yes | yes |
| 608-496 | Bandwidth | CAMBRIDGE | 2014-12-04 | yes | yes |
| 608-497 | Charter | VERONA | 2006-02-01 | yes | yes |
| 608-498 | Lumen | LA CROSSE | 2003-04-17 | yes | yes |
| 608-499 | MCC TELEPHONY OF THE MIDWEST, LLC - WI | HAZELGREEN | 2010-06-30 | yes | yes |
| 608-500 | FRACTEL, LLC | BROOKS | 2020-10-16 | yes | yes |
| 608-501 | AT&T | STOUGHTON | 2009-10-14 | yes | yes |
| 608-502 | Onvoy | EVANSVILLE | 2021-06-24 | yes | yes |
| 608-503 | MCC TELEPHONY OF THE MIDWEST, LLC - WI | CASHTON | 2019-12-23 | yes | yes |
| 608-504 | Onvoy | MADISON | – | yes | yes |
| 608-505 | Onvoy | POYNETTE | 2021-07-02 | yes | yes |
| 608-506 | Onvoy | WONEWOC | 2021-07-02 | yes | yes |
| 608-507 | Lumen | BOAZ | 2017-10-19 | yes | yes |
| 608-508 | AT&T | WESTFIELD | 2022-01-08 | yes | yes |
| 608-509 | Verizon | MADISON | 2006-05-17 | yes | yes |
| 608-510 | AT&T | GRATIOT | 2017-07-06 | yes | yes |
| 608-512 | Lumen | MADISON | – | yes | yes |
| 608-513 | UNITED STATES CELLULAR - WI | MADISON | – | yes | yes |
| 608-514 | Windstream | MADISON | 2008-02-14 | yes | yes |
| 608-515 | T-Mobile | MADISON | 2009-10-28 | yes | yes |
| 608-516 | UNITED STATES CELLULAR - WI | MADISON | – | yes | yes |
| 608-517 | Lumen | FENNIMORE | 2017-10-09 | yes | yes |
| 608-518 | Verizon | LA CROSSE | 2012-07-13 | yes | yes |
| 608-519 | Charter | LA CROSSE | 2005-08-04 | yes | yes |
| 608-520 | Bandwidth | MADISON | 2010-09-07 | yes | yes |
| 608-521 | UNITED STATES CELLULAR - WI | READSTOWN | 2008-10-08 | yes | yes |
| 608-522 | Brightspeed | NO FREEDOM | – | – | yes |
| 608-523 | UTELCO, INC. | BLANCHADVL | – | yes | yes |
| 608-524 | Frontier | REEDSBURG | – | – | yes |
| 608-525 | Brightspeed | ETTRICK | – | yes | yes |
| 608-526 | Brightspeed | HOLMEN | – | – | yes |
| 608-527 | MT. VERNON TEL. CO. | NEW GLARUS | – | yes | yes |
| 608-528 | VERNON TEL. COOP. | YUBA | – | – | yes |
| 608-529 | MCC TELEPHONY OF THE MIDWEST, LLC - WI | CUBA CITY | 2020-05-14 | yes | yes |
| 608-530 | AT&T | JANESVILLE | 2017-04-04 | yes | yes |
| 608-531 | Windstream | JANESVILLE | – | yes | yes |
| 608-532 | Brightspeed | AVOCA | – | yes | yes |
| 608-533 | GRANTLAND TELECOM, INC. | WOODMAN | – | – | yes |
| 608-534 | Brightspeed | TREMPEALEU | – | yes | yes |
| 608-535 | Bandwidth | MADISON | 2010-08-06 | yes | yes |
| 608-536 | RICHLAND-GRANT TEL. COOP., INC. | BOAZ | – | – | yes |
| 608-537 | RICHLAND-GRANT TEL. COOP., INC. | BLUE RIVER | – | – | yes |
| 608-538 | RICHLAND-GRANT TEL. COOP., INC. | SABIN | – | – | yes |
| 608-539 | Brightspeed | CENTERVL | – | – | yes |
| 608-540 | AT&T | HOLMEN | 2018-10-08 | yes | yes |
| 608-541 | Windstream | STOUGHTON | 2001-02-16 | yes | yes |
| 608-542 | AT&T | CAMPDOUGLS | – | – | yes |
| 608-543 | Brightspeed | ARGYLE | – | yes | yes |
| 608-544 | Frontier | WITWEN | – | yes | yes |
| 608-545 | UNITED STATES CELLULAR - WI | YUBA | 2008-10-08 | yes | yes |
| 608-546 | Frontier | PLAIN | – | yes | yes |
| 608-547 | UNITED STATES CELLULAR - WI | MAUSTON | – | yes | yes |
| 608-548 | UNITED STATES CELLULAR - WI | MAUSTON | – | yes | yes |
| 608-549 | Frontier | BLOOM CITY | – | yes | yes |
| 608-550 | American Messaging | MADISON | – | – | yes |
| 608-551 | TON80 COMMUNICATIONS, LLC | BRODHEAD | – | yes | yes |
| 608-552 | AT&T | CAMPDOUGLS | – | yes | yes |
| 608-553 | Verizon | DODGEVILLE | – | yes | yes |
| 608-554 | Lumen | JANESVILLE | 2003-02-05 | yes | yes |
| 608-556 | AT&T | MADISON | – | yes | yes |
| 608-557 | MICHIGAN WIRELESS, LLC DBA BUG TUSSEL WIRELESS | WONEWOC | 2009-12-22 | yes | yes |
| 608-558 | UNITED STATES CELLULAR - WI | MONROE | – | yes | yes |
| 608-559 | American Messaging | MADISON | – | – | yes |
| 608-560 | CENTRAL STATE TEL. CO | NECEDAH | 2013-05-02 | yes | yes |
| 608-561 | Lumen | EDGERTON | 2002-10-21 | yes | yes |
| 608-562 | LEMONWEIR VALLEY TEL. CO. | NEW LISBON | – | – | yes |
| 608-563 | Charter | JANESVILLE | 2004-01-16 | yes | yes |
| 608-564 | Frontier | MONROE CTR | – | yes | yes |
| 608-565 | CENTRAL STATE TEL. CO | NECEDAH | – | yes | yes |
| 608-566 | T-Mobile | PORTAGE | 2001-11-02 | yes | yes |
| 608-567 | T-Mobile | TOMAH | 2001-11-02 | yes | yes |
| 608-568 | DICKEYVILLE TEL. CORP. | DICKEYVL | – | yes | yes |
| 608-569 | Lumen | BAGLEY | 2017-10-09 | yes | yes |
| 608-570 | AT&T | RICHLD CTR | 2019-08-01 | yes | yes |
| 608-571 | Peerless | MADISON | 2014-10-10 | yes | yes |
| 608-572 | Verizon | MADISON | – | yes | yes |
| 608-573 | UNITED STATES CELLULAR - WI | POYNETTE | 2014-09-04 | yes | yes |
| 608-574 | UNITED STATES CELLULAR - WI | DODGEVILLE | – | yes | yes |
| 608-575 | UNITED STATES CELLULAR - WI | MADISON | – | yes | yes |
| 608-576 | UNITED STATES CELLULAR - WI | MADISON | – | yes | yes |
| 608-577 | UNITED STATES CELLULAR - WI | MADISON | 2002-08-28 | yes | yes |
| 608-578 | Spok | MADISON | – | – | yes |
| 608-579 | Charter | MCFARLAND | 2007-01-10 | yes | yes |
| 608-580 | Charter | MILTON | 2006-11-30 | yes | yes |
| 608-581 | Verizon | BARABOO | 2015-11-11 | yes | yes |
| 608-582 | Brightspeed | GALESVILLE | – | – | yes |
| 608-583 | Frontier | LONE ROCK | – | yes | yes |
| 608-584 | MARQUETTE-ADAMS TEL. COOP., INC. | BROOKS | – | – | yes |
| 608-585 | Frontier | ITHACA | – | yes | yes |
| 608-586 | MARQUETTE-ADAMS TEL. COOP., INC. | OXFORD | – | – | yes |
| 608-587 | MARQUETTE-ADAMS TEL. COOP., INC. | ENDEAVOR | – | – | yes |
| 608-588 | Frontier | SPG GREEN | – | yes | yes |
| 608-589 | MARQUETTE-ADAMS TEL. COOP., INC. | PACKWAUKEE | – | – | yes |
| 608-590 | Onvoy | MADISON | 2018-11-21 | yes | yes |
| 608-591 | AT&T | LODI | 2016-01-25 | yes | yes |
| 608-592 | Frontier | LODI | – | yes | yes |
| 608-593 | MICHIGAN WIRELESS, LLC DBA BUG TUSSEL WIRELESS | REEDSBURG | 2010-02-19 | yes | yes |
| 608-594 | Onvoy | PLAIN | 2020-12-21 | yes | yes |
| 608-595 | Lumen | BLUE RIVER | 2017-10-19 | yes | yes |
| 608-596 | Frontier | NOAPPLERIV | – | yes | yes |
| 608-597 | Onvoy | MCFARLAND | 2018-07-24 | yes | yes |
| 608-598 | UNITED STATES CELLULAR - WI | MADISON | 2015-07-31 | yes | yes |
| 608-599 | Charter | JUDA | 2010-06-23 | yes | yes |
| 608-600 | Onvoy | CLINTON | 2019-05-09 | yes | yes |
| 608-601 | Bandwidth | MCFARLAND | 2021-11-12 | yes | yes |
| 608-602 | AT&T | WAUNAKEE | 2019-04-11 | yes | yes |
| 608-603 | Spok | JANESVILLE | – | – | yes |
| 608-604 | UNITED STATES CELLULAR - WI | RICHLD CTR | – | yes | yes |
| 608-605 | Onvoy | KENDALL | 2019-08-02 | yes | yes |
| 608-606 | UNITED STATES CELLULAR - WI | VIROQUA | – | yes | yes |
| 608-607 | Charter | JANESVILLE | 2019-08-06 | yes | yes |
| 608-608 | Onvoy | MADISON | 2024-08-07 | yes | yes |
| 608-609 | AT&T | MADISON | 2008-01-22 | yes | yes |
| 608-610 | AT&T | LIME RIDGE | 2019-11-21 | yes | yes |
| 608-612 | Charter | WEST SALEM | 2005-12-02 | yes | yes |
| 608-613 | Verizon | NEW LISBON | 2013-08-21 | yes | yes |
| 608-614 | MCC TELEPHONY OF THE MIDWEST, LLC - WI | ONTARIO | 2020-01-14 | yes | yes |
| 608-615 | AT&T | LA CROSSE | 2016-04-07 | yes | yes |
| 608-616 | Bandwidth | MADISON | 2008-10-10 | yes | yes |
| 608-617 | UNITED STATES CELLULAR - WI | PORTAGE | 2001-02-12 | yes | yes |
| 608-618 | Bandwidth | EDGERTON | 2012-12-07 | yes | yes |
| 608-619 | UNITED STATES CELLULAR - WI | COONVALLEY | 2008-02-11 | yes | yes |
| 608-620 | Lumen | MADISON | 2010-10-25 | yes | yes |
| 608-621 | Verizon | MADISON | 2020-10-15 | yes | yes |
| 608-622 | AT&T | MADISON | 2008-08-04 | yes | yes |
| 608-623 | Frontier | COBB | – | yes | yes |
| 608-624 | RICHLAND-GRANT TEL. COOP., INC. | SOLDIRSGRV | – | – | yes |
| 608-625 | VERNON TEL. COOP. | LA FARGE | – | – | yes |
| 608-626 | COCHRANE COOP. TEL. CO. | WAUMANDEE | – | – | yes |
| 608-627 | VERNON TEL. COOP. | VIOLA | – | – | yes |
| 608-628 | AT&T | MADISON | 2002-06-20 | yes | yes |
| 608-629 | VERNON TEL. COOP. | READSTOWN | – | – | yes |
| 608-630 | Charter | MADISON | – | yes | yes |
| 608-631 | UNITED STATES CELLULAR - WI | BELOIT | 2019-09-09 | yes | yes |
| 608-632 | Verizon | WESTBY | – | yes | yes |
| 608-633 | Verizon | SPARTA | 2003-11-05 | yes | yes |
| 608-634 | VERNON TEL. COOP. | WESTBY | – | – | yes |
| 608-635 | Brightspeed | POYNETTE | – | yes | yes |
| 608-636 | Verizon | NEW GLARUS | 2003-11-21 | yes | yes |
| 608-637 | Frontier | VIROQUA | – | – | yes |
| 608-638 | VERNON COMMUNICATIONS COOPERATIVE | VIROQUA | 2007-07-13 | – | yes |
| 608-639 | UNITED STATES CELLULAR - WI | LA FARGE | 2008-10-08 | yes | yes |
| 608-640 | UNITED STATES CELLULAR - WI | MADISON | 2016-08-01 | yes | yes |
| 608-641 | MCC TELEPHONY OF THE MIDWEST, LLC - WI | BENTON | 2019-08-07 | yes | yes |
| 608-642 | Verizon | PLATTEVL | – | yes | yes |
| 608-643 | Frontier | SAUK CITY | – | yes | yes |
| 608-644 | Frontier | SAUK CITY | – | yes | yes |
| 608-645 | MICHIGAN WIRELESS, LLC DBA BUG TUSSEL WIRELESS | MONROE | 2008-05-22 | – | yes |
| 608-646 | Windstream | STOUGHTON | – | yes | yes |
| 608-647 | Frontier | RICHLD CTR | – | yes | yes |
| 608-648 | VERNON TEL. COOP. | DE SOTO | – | – | yes |
| 608-649 | TECH COM, INC. - WI | RICHLD CTR | 2002-03-12 | – | yes |
| 608-650 | MCC TELEPHONY OF THE MIDWEST, LLC - WI | NECEDAH | 2020-02-13 | yes | yes |
| 608-651 | Charter | RICHMOND | 2022-11-08 | yes | yes |
| 608-652 | MCC TELEPHONY OF THE MIDWEST, LLC - WI | NORWALK | 2020-01-14 | yes | yes |
| 608-653 | Lumen | VERONA | 2017-10-04 | yes | yes |
| 608-654 | Brightspeed | CASHTON | – | yes | yes |
| 608-655 | Frontier | MARSHALL | – | yes | yes |
| 608-656 | MCC TELEPHONY OF THE MIDWEST, LLC - WI | MAUSTON | 2020-02-18 | yes | yes |
| 608-657 | Spok | MADISON | – | – | yes |
| 608-658 | T-Mobile | MADISON | 2001-02-05 | yes | yes |
| 608-659 | Charter | MINDORO | 2008-02-20 | yes | yes |
| 608-660 | MCC TELEPHONY OF THE MIDWEST, LLC - WI | WILTON | 2020-01-14 | yes | yes |
| 608-661 | TDS | MADISON | – | – | yes |
| 608-662 | TDS | MIDDLETON | – | – | yes |
| 608-663 | TDS | MADISON | – | – | yes |
| 608-664 | TDS | MIDDLETON | – | – | yes |
| 608-665 | TDS | MADISON | 2008-08-12 | yes | yes |
| 608-666 | Frontier | LYNDON STA | – | yes | yes |
| 608-667 | AT&T | LA CROSSE | – | yes | yes |
| 608-668 | Lumen | LA CROSSE | 2019-10-08 | yes | yes |
| 608-669 | Verizon | MADISON | 2003-07-15 | yes | yes |
| 608-670 | Charter | MOUNTHOREB | 2020-06-15 | yes | yes |
| 608-671 | UNITED STATES CELLULAR - WI | BELOIT | 2021-06-18 | yes | yes |
| 608-672 | MCC TELEPHONY OF THE MIDWEST, LLC - WI | CHASEBURG | 2020-04-01 | yes | yes |
| 608-673 | IP HORIZON LLC | MADISON | 2021-05-03 | yes | yes |
| 608-674 | Onvoy | MILTON | 2021-07-14 | yes | yes |
| 608-675 | VERNON TEL. COOP. | LIBETYPOLE | – | – | yes |
| 608-676 | Frontier | CLINTON | – | yes | yes |
| 608-677 | Frontier | NO WARREN | – | yes | yes |
| 608-678 | AT&T | WISCONDLLS | – | yes | yes |
| 608-679 | MCC TELEPHONY OF THE MIDWEST, LLC - WI | STODDARD | 2020-04-01 | yes | yes |
| 608-680 | Onvoy | BROOKLYN | 2019-05-09 | yes | yes |
| 608-681 | MCC TELEPHONY OF THE MIDWEST, LLC - WI | VIOLA | 2020-05-14 | yes | yes |
| 608-683 | Verizon | PORTAGE | 2012-10-01 | yes | yes |
| 608-684 | Bandwidth | FOOTVILLE | 2019-08-01 | yes | yes |
| 608-685 | TENNEY TEL. CO. | ALMA | – | yes | yes |
| 608-686 | Onvoy | PORTAGE | 2020-04-13 | yes | yes |
| 608-687 | Brightspeed | FOUNTAINCY | – | – | yes |
| 608-688 | Bandwidth | COTTAGEGRV | 2015-01-26 | yes | yes |
| 608-689 | VERNON TEL. COOP. | GENOA | – | – | yes |
| 608-690 | CSC WIRELESS, LLC | MADISON | 2020-07-08 | yes | yes |
| 608-691 | Charter | MT VERNON | 2009-10-30 | yes | yes |
| 608-692 | AT&T | MADISON | – | – | yes |
| 608-693 | UNITED STATES CELLULAR - WI | WESTBY | 2017-04-03 | yes | yes |
| 608-694 | Onvoy | COTTAGEGRV | 2020-12-21 | yes | yes |
| 608-695 | AT&T | MADISON | – | – | yes |
| 608-696 | AT&T | SPARTA | 2020-06-05 | yes | yes |
| 608-697 | UNITED STATES CELLULAR - WI | PORTAGE | – | yes | yes |
| 608-698 | AT&T | MADISON | – | – | yes |
| 608-699 | Lumen | CAMBRIDGE | 2014-11-25 | yes | yes |
| 608-701 | MCC TELEPHONY OF THE MIDWEST, LLC - WI | DE SOTO | 2021-10-26 | yes | yes |
| 608-702 | Onvoy | PARDEEVL | 2021-07-14 | yes | yes |
| 608-703 | Onvoy | NEW GLARUS | 2021-07-15 | yes | yes |
| 608-704 | T-Mobile | WEST SALEM | 2021-04-24 | yes | yes |
| 608-705 | MCC TELEPHONY OF THE MIDWEST, LLC - WI | BROWNTOWN | 2006-11-01 | yes | yes |
| 608-706 | T-Mobile | TOMAH | 2021-06-28 | yes | yes |
| 608-707 | T-Mobile | MADISON | – | yes | yes |
| 608-708 | Lumen | DEERFIELD | 2017-09-28 | yes | yes |
| 608-709 | Lumen | MADISON | 2012-10-12 | yes | yes |
| 608-710 | Charter | MADISON | 2019-09-13 | yes | yes |
| 608-712 | UNITED STATES CELLULAR - WI | MADISON | – | yes | yes |
| 608-713 | Lumen | BELOIT | – | yes | yes |
| 608-714 | Charter | MERRIMAC | 2021-07-26 | yes | yes |
| 608-715 | Charter | ADAMS | 2023-05-02 | yes | yes |
| 608-716 | Lumen | MADISON | 2019-04-22 | yes | yes |
| 608-717 | AT&T | NO FREEDOM | 2019-12-06 | yes | yes |
| 608-718 | AT&T | JANESVILLE | – | yes | yes |
| 608-719 | AT&T | STOUGHTON | 2005-02-23 | yes | yes |
| 608-720 | AT&T | MADISON | 2016-06-09 | yes | yes |
| 608-721 | Onvoy | MADISON | 2008-09-15 | yes | yes |
| 608-722 | HD CARRIER LLC | MADISON | 2020-10-02 | yes | yes |
| 608-723 | FARMERS TEL. CO. | LANCASTER | – | yes | yes |
| 608-724 | T-Mobile | LA CROSSE | 2001-04-01 | yes | yes |
| 608-725 | FARMERS TEL. CO. | CASSVILLE | – | yes | yes |
| 608-726 | Verizon | DARLINGTON | 2003-07-17 | yes | yes |
| 608-727 | Frontier | LOGANVILLE | – | yes | yes |
| 608-728 | AT&T | JANESVILLE | – | yes | yes |
| 608-729 | Lumen | MADISON | 2005-11-09 | yes | yes |
| 608-730 | HD CARRIER LLC | STOUGHTON | 2021-05-14 | yes | yes |
| 608-731 | Onvoy | WEST SALEM | 2017-03-06 | yes | yes |
| 608-732 | UNITED STATES CELLULAR - WI | PLATTEVL | – | yes | yes |
| 608-733 | AT&T | MADISON | 2017-09-11 | yes | yes |
| 608-734 | Lumen | SENECA | – | yes | yes |
| 608-735 | RICHLAND-GRANT TEL. COOP., INC. | GAYS MILLS | – | – | yes |
| 608-736 | AT&T | EVANSVILLE | 2010-01-11 | yes | yes |
| 608-737 | Charter | NO FREEDOM | 2008-02-20 | yes | yes |
| 608-738 | Brightspeed | LA CROSSE | – | yes | yes |
| 608-739 | Brightspeed | MUSCODA | – | yes | yes |
| 608-740 | Windstream | MADISON | 2022-03-08 | yes | yes |
| 608-741 | AT&T | JANESVILLE | – | – | yes |
| 608-742 | Frontier | PORTAGE | – | – | yes |
| 608-743 | AT&T | JANESVILLE | – | yes | yes |
| 608-744 | CUBA CITY TEL. EXCH. CO., INC. | CUBA CITY | – | – | yes |
| 608-745 | Frontier | PORTAGE | – | yes | yes |
| 608-746 | TON80 COMMUNICATIONS, LLC | JANESVILLE | 2021-04-12 | yes | yes |
| 608-747 | Onvoy | MAUSTON | 2014-12-23 | yes | yes |
| 608-748 | Frontier | FAIRPLAY | – | yes | yes |
| 608-749 | MCC TELEPHONY OF THE MIDWEST, LLC - WI | EASTMAN | 2021-02-10 | yes | yes |
| 608-750 | TDS | JANESVILLE | – | – | yes |
| 608-751 | UNITED STATES CELLULAR - WI | JANESVILLE | – | yes | yes |
| 608-752 | AT&T | JANESVILLE | – | – | yes |
| 608-753 | Frontier | ARENA | – | yes | yes |
| 608-754 | AT&T | JANESVILLE | – | – | yes |
| 608-755 | AT&T | JANESVILLE | – | – | yes |
| 608-756 | AT&T | JANESVILLE | – | – | yes |
| 608-757 | AT&T | JANESVILLE | – | – | yes |
| 608-758 | AT&T | JANESVILLE | – | – | yes |
| 608-759 | Brightspeed | BENTON | – | yes | yes |
| 608-760 | TON80 COMMUNICATIONS, LLC | TREMPEALEU | 2022-03-03 | yes | yes |
| 608-761 | MCC TELEPHONY OF THE MIDWEST, LLC - WI | SENECA | 2021-02-11 | yes | yes |
| 608-762 | BELMONT TEL. CO. | BELMONT | – | – | yes |
| 608-763 | FARMERS TEL. CO. | POTOSI | – | yes | yes |
| 608-764 | Frontier | DEERFIELD | – | yes | yes |
| 608-765 | AT&T | RICHMOND | 2011-08-12 | yes | yes |
| 608-766 | Onvoy | ELROY | – | yes | yes |
| 608-767 | BLACK EARTH TEL. CO. | BLACKEARTH | – | yes | yes |
| 608-768 | Onvoy | REEDSBURG | – | – | yes |
| 608-769 | Verizon | LA CROSSE | – | – | yes |
| 608-770 | AT&T | MADISON | – | – | yes |
| 608-771 | Charter | VERONA | 2012-08-21 | yes | yes |
| 608-772 | AT&T | MADISON | – | yes | yes |
| 608-773 | MID-PLAINS TEL., INC. | CROSS PL | 2011-08-19 | yes | yes |
| 608-774 | AT&T | JANESVILLE | – | – | yes |
| 608-775 | Brightspeed | LA CROSSE | – | – | yes |
| 608-776 | Brightspeed | DARLINGTON | – | – | yes |
| 608-777 | MT. VERNON TEL. CO. | VERONA | 2010-06-01 | yes | yes |
| 608-778 | UNITED STATES CELLULAR - WI | PLATTEVL | – | yes | yes |
| 608-779 | Brightspeed | LA CROSSE | – | – | yes |
| 608-780 | Verizon | LA CROSSE | – | – | yes |
| 608-781 | Brightspeed | LA CROSSE | – | – | yes |
| 608-782 | Brightspeed | LA CROSSE | – | – | yes |
| 608-783 | Brightspeed | LA CROSSE | – | – | yes |
| 608-784 | Brightspeed | LA CROSSE | – | – | yes |
| 608-785 | Brightspeed | LA CROSSE | – | – | yes |
| 608-786 | Brightspeed | WEST SALEM | – | – | yes |
| 608-787 | Brightspeed | LA CROSSE | – | – | yes |
| 608-788 | Brightspeed | LA CROSSE | – | – | yes |
| 608-789 | Brightspeed | LA CROSSE | – | – | yes |
| 608-790 | UNITED STATES CELLULAR - WI | LA CROSSE | – | yes | yes |
| 608-791 | Brightspeed | LA CROSSE | – | – | yes |
| 608-792 | UNITED STATES CELLULAR - WI | LA CROSSE | – | yes | yes |
| 608-793 | Brightspeed | LA CROSSE | – | – | yes |
| 608-794 | FARMERS TEL. CO. | BEETOWN | – | – | yes |
| 608-795 | Brightspeed | MAZOMANIE | – | yes | yes |
| 608-796 | Brightspeed | LA CROSSE | – | – | yes |
| 608-797 | Verizon | LA CROSSE | – | – | yes |
| 608-798 | MID-PLAINS TEL., INC. | CROSS PL | – | yes | yes |
| 608-799 | Verizon | LA CROSSE | – | – | yes |
| 608-800 | Onvoy | MADISON | 2015-11-17 | yes | yes |
| 608-801 | Bandwidth | DE FOREST | 2022-01-18 | yes | yes |
| 608-802 | AT&T | BELOIT | 2018-06-25 | yes | yes |
| 608-803 | Twilio | SPG GREEN | 2021-07-26 | yes | yes |
| 608-804 | UNITED STATES CELLULAR - WI | GENOA | 2008-10-08 | yes | yes |
| 608-805 | Onvoy | REEDSBURG | 2022-05-09 | yes | yes |
| 608-806 | Onvoy | FAIRPLAY | 2020-03-05 | yes | yes |
| 608-807 | Lumen | MADISON | – | yes | yes |
| 608-808 | MCC TELEPHONY OF THE MIDWEST, LLC - WI | BELMONT | 2020-02-25 | yes | yes |
| 608-809 | Onvoy | BARABOO | 2023-06-22 | yes | yes |
| 608-810 | Lumen | PORTAGE | 2021-11-05 | yes | yes |
| 608-812 | AT&T | ARENA | 2019-12-19 | yes | yes |
| 608-813 | Charter | BLACKEARTH | 2010-01-15 | yes | yes |
| 608-814 | T-Mobile | BELOIT | 2022-12-08 | yes | yes |
| 608-815 | T-Mobile | JANESVILLE | 2022-12-08 | yes | yes |
| 608-816 | Lumen | LA CROSSE | 2022-01-31 | yes | yes |
| 608-817 | Bandwidth | MADISON | 2022-12-08 | yes | yes |
| 608-818 | AT&T | MONTELLO | 2014-06-11 | yes | yes |
| 608-819 | Windstream | MADISON | 2001-01-15 | yes | yes |
| 608-820 | Charter | MIDDLETON | – | yes | yes |
| 608-821 | MID-PLAINS TEL., INC. | MIDDLETON | – | – | yes |
| 608-822 | GRANTLAND TELECOM, INC. | FENNIMORE | – | yes | yes |
| 608-823 | Brightspeed | NORWALK | – | yes | yes |
| 608-824 | MID-PLAINS TEL., INC. | MIDDLETON | – | – | yes |
| 608-825 | Frontier | SUNPRAIRIE | – | – | yes |
| 608-826 | MID-PLAINS TEL., INC. | MIDDLETON | – | – | yes |
| 608-827 | MID-PLAINS TEL., INC. | MIDDLETON | – | – | yes |
| 608-828 | MID-PLAINS TEL., INC. | MIDDLETON | – | – | yes |
| 608-829 | MID-PLAINS TEL., INC. | MIDDLETON | – | – | yes |
| 608-830 | MID-PLAINS TEL., INC. | MIDDLETON | 2005-05-24 | yes | yes |
| 608-831 | MID-PLAINS TEL., INC. | MIDDLETON | – | – | yes |
| 608-832 | MT. VERNON TEL. CO. | MT VERNON | – | yes | yes |
| 608-833 | MID-PLAINS TEL., INC. | MIDDLETON | – | – | yes |
| 608-834 | Frontier | SUNPRAIRIE | – | – | yes |
| 608-835 | Frontier | OREGON | – | – | yes |
| 608-836 | MID-PLAINS TEL., INC. | MIDDLETON | – | – | yes |
| 608-837 | Frontier | SUNPRAIRIE | – | – | yes |
| 608-838 | Frontier | MCFARLAND | – | yes | yes |
| 608-839 | Frontier | COTTAGEGRV | – | yes | yes |
| 608-840 | TON80 COMMUNICATIONS, LLC | MONTICELLO | 2022-03-07 | yes | yes |
| 608-841 | Onvoy | MIDDLETON | – | yes | yes |
| 608-842 | Brightspeed | DE FOREST | – | yes | yes |
| 608-843 | UNITED STATES CELLULAR - WI | MADISON | 2003-04-18 | yes | yes |
| 608-844 | AT&T | WISCONDLLS | 2002-01-29 | yes | yes |
| 608-845 | MT. VERNON TEL. CO. | VERONA | – | – | yes |
| 608-846 | Brightspeed | DE FOREST | – | – | yes |
| 608-847 | Frontier | MAUSTON | – | yes | yes |
| 608-848 | MT. VERNON TEL. CO. | VERONA | – | – | yes |
| 608-849 | WAUNAKEE TEL. CO. | WAUNAKEE | – | – | yes |
| 608-850 | WAUNAKEE TEL. CO. | WAUNAKEE | – | yes | yes |
| 608-851 | Verizon | MONROE | 2002-12-03 | yes | yes |
| 608-852 | Verizon | MADISON | 2002-12-03 | yes | yes |
| 608-853 | AT&T | MAUSTON | – | – | yes |
| 608-854 | Brightspeed | HAZELGREEN | – | – | yes |
| 608-855 | TDS | SPARTA | – | yes | yes |
| 608-856 | Windstream | BELOIT | 2001-02-15 | yes | yes |
| 608-857 | Brightspeed | MINDORO | – | – | yes |
| 608-858 | MID-PLAINS TEL., INC. | MIDDLETON | 2011-08-19 | yes | yes |
| 608-859 | Lumen | BEETOWN | 2017-10-09 | yes | yes |
| 608-860 | Onvoy | LA CROSSE | 2020-12-07 | yes | yes |
| 608-861 | Verizon | PACKWAUKEE | 2022-12-08 | yes | yes |
| 608-862 | UTELCO, INC. | ALBANY | – | yes | yes |
| 608-863 | Verizon | ARCADIA | 2003-07-11 | yes | yes |
| 608-864 | Verizon | BLAIR | 2003-07-11 | yes | yes |
| 608-865 | Verizon | GALESVILLE | 2003-07-11 | yes | yes |
| 608-866 | TERRA NOVA TELECOM INC. | MADISON | 2020-01-24 | yes | yes |
| 608-867 | COMMIO, LLC | MADISON | 2019-04-18 | yes | yes |
| 608-868 | Brightspeed | MILTON | – | – | yes |
| 608-869 | TON80 COMMUNICATIONS, LLC | LODI | 2022-03-03 | yes | yes |
| 608-870 | NUSO, LLC | STOUGHTON | 2023-02-08 | yes | yes |
| 608-871 | Onvoy | LA CROSSE | 2023-02-08 | yes | yes |
| 608-872 | Brightspeed | MOUNT ZION | – | yes | yes |
| 608-873 | AT&T | STOUGHTON | – | – | yes |
| 608-874 | Lumen | EASTMAN | – | yes | yes |
| 608-875 | Lumen | WAUZEKA | – | yes | yes |
| 608-876 | Brightspeed | FOOTVILLE | – | yes | yes |
| 608-877 | AT&T | STOUGHTON | – | yes | yes |
| 608-878 | TON80 COMMUNICATIONS, LLC | STEUBEN | 2022-02-17 | yes | yes |
| 608-879 | Frontier | ORFORDVL | – | yes | yes |
| 608-880 | TON80 COMMUNICATIONS, LLC | WITWEN | 2022-02-28 | yes | yes |
| 608-881 | Lumen | LA CROSSE | 2014-09-16 | yes | yes |
| 608-882 | AT&T | EVANSVILLE | – | yes | yes |
| 608-883 | AT&T | RICHMOND | – | yes | yes |
| 608-884 | Frontier | EDGERTON | – | yes | yes |
| 608-885 | UNITED STATES CELLULAR - WI | LANCASTER | 2016-01-13 | yes | yes |
| 608-886 | Verizon | MADISON | – | yes | yes |
| 608-887 | Lumen | GAYS MILLS | 2017-10-19 | yes | yes |
| 608-888 | Onvoy | MADISON | 2015-08-17 | yes | yes |
| 608-889 | Peerless | STOUGHTON | 2018-09-27 | yes | yes |
| 608-890 | AT&T | MADISON | 2003-12-10 | yes | yes |
| 608-891 | Onvoy | VIROQUA | 2023-02-08 | yes | yes |
| 608-892 | Charter | WARRENS | 2008-02-20 | yes | yes |
| 608-893 | NUSO, LLC | MADISON | 2023-02-08 | yes | yes |
| 608-894 | Comcast | ARCADIA | 2023-04-10 | yes | yes |
| 608-895 | Twilio | MADISON | 2021-05-28 | yes | yes |
| 608-896 | Dish | MADISON | 2023-04-10 | yes | yes |
| 608-897 | Frontier | BRODHEAD | – | yes | yes |
| 608-898 | T-Mobile | JANESVILLE | 2016-04-19 | yes | yes |
| 608-899 | Lumen | WOODMAN | 2017-10-04 | yes | yes |
| 608-900 | FRACTEL, LLC | CATARACT | 2020-10-16 | yes | yes |
| 608-901 | T-Mobile | JANESVILLE | 2018-10-31 | yes | yes |
| 608-902 | Dish | DICKEYVL | 2023-05-22 | yes | yes |
| 608-903 | Twilio | LA CROSSE | 2023-07-26 | yes | yes |
| 608-904 | Verizon | BELOIT | 2023-09-27 | yes | yes |
| 608-905 | Verizon | JANESVILLE | 2023-12-01 | yes | yes |
| 608-906 | Onvoy | MADISON | 2006-02-06 | yes | yes |
| 608-907 | AT&T | EVANSVILLE | 2024-01-25 | yes | yes |
| 608-908 | TON80 COMMUNICATIONS, LLC | WAUMANDEE | 2022-02-17 | yes | yes |
| 608-909 | Bandwidth | OREGON | 2015-02-17 | yes | yes |
| 608-910 | Verizon | MADISON | 2024-02-14 | yes | yes |
| 608-912 | Bandwidth | DE FOREST | 2017-09-28 | yes | yes |
| 608-913 | TON80 COMMUNICATIONS, LLC | COCHRANE | 2022-01-14 | yes | yes |
| 608-914 | AT&T | MADISON | 2024-01-18 | yes | yes |
| 608-915 | AT&T | MADISON | 2024-01-18 | yes | yes |
| 608-916 | AT&T | MADISON | 2024-01-18 | yes | yes |
| 608-917 | T-Mobile | WISCONDLLS | 2024-02-21 | yes | yes |
| 608-918 | Charter | SAUK CITY | 2023-05-02 | yes | yes |
| 608-919 | Charter | SOUTHWAYNE | 2024-03-14 | yes | yes |
| 608-920 | HD CARRIER LLC | STOUGHTON | 2025-07-14 | yes | yes |
| 608-921 | UNITED STATES CELLULAR - WI | JANESVILLE | 2001-01-17 | yes | yes |
| 608-922 | Brightspeed | GRATIOT | – | yes | yes |
| 608-923 | Onvoy | OREGON | 2024-03-15 | yes | yes |
| 608-924 | Frontier | RIDGEWAY | – | yes | yes |
| 608-925 | AT&T | SOUTHWAYNE | 2017-08-08 | yes | yes |
| 608-926 | TON80 COMMUNICATIONS, LLC | ENDEAVOR | 2022-01-14 | yes | yes |
| 608-927 | Telnyx | BELOIT | – | yes | yes |
| 608-928 | Onvoy | TOMAH | 2024-03-19 | yes | yes |
| 608-929 | Brightspeed | HIGHLAND | – | yes | yes |
| 608-930 | MH TELECOM, INC. - WI | DODGEVILLE | – | yes | yes |
| 608-931 | UNITED STATES CELLULAR - WI | JANESVILLE | 2001-12-31 | yes | yes |
| 608-932 | TON80 COMMUNICATIONS, LLC | LA VALLE | 2022-01-27 | yes | yes |
| 608-933 | FRACTEL, LLC | LYNDON STA | 2019-12-26 | yes | yes |
| 608-934 | UTELCO, INC. | JUDA | – | yes | yes |
| 608-935 | Frontier | DODGEVILLE | – | – | yes |
| 608-936 | TON80 COMMUNICATIONS, LLC | WAUZEKA | 2022-02-17 | yes | yes |
| 608-937 | Frontier | DODGEVILLE | – | yes | yes |
| 608-938 | UTELCO, INC. | MONTICELLO | – | yes | yes |
| 608-939 | TON80 COMMUNICATIONS, LLC | MONROE CTR | 2022-03-18 | yes | yes |
| 608-940 | Onvoy | MADISON | 2024-06-12 | yes | yes |
| 608-941 | Onvoy | SUNPRAIRIE | 2024-06-12 | yes | yes |
| 608-942 | TON80 COMMUNICATIONS, LLC | CAZENOVIA | 2022-01-14 | yes | yes |
| 608-943 | Brightspeed | MONTFORT | – | yes | yes |
| 608-944 | FRACTEL, LLC | WOODFORD | 2021-06-29 | yes | yes |
| 608-945 | TON80 COMMUNICATIONS, LLC | MOUNT ZION | 2022-02-17 | yes | yes |
| 608-946 | FRACTEL, LLC | EDGERTON | 2021-07-02 | yes | yes |
| 608-947 | TON80 COMMUNICATIONS, LLC | LIBETYPOLE | 2022-02-17 | yes | yes |
| 608-948 | Charter | RIDGEWAY | 2023-05-02 | yes | yes |
| 608-949 | Peerless | MADISON | – | yes | yes |
| 608-951 | T-Mobile | GALESVILLE | 2025-01-21 | yes | yes |
| 608-952 | T-Mobile | HOLMEN | 2025-01-21 | yes | yes |
| 608-953 | T-Mobile | LANCASTER | 2025-01-22 | yes | yes |
| 608-954 | T-Mobile | MUSCODA | 2025-01-22 | yes | yes |
| 608-955 | Lumen | SOLDIRSGRV | 2017-10-19 | yes | yes |
| 608-956 | T-Mobile | RICHLD CTR | 2025-01-23 | yes | yes |
| 608-957 | AT&T | MADISON | – | yes | yes |
| 608-960 | AT&T | MADISON | 2014-06-27 | yes | yes |
| 608-961 | Onvoy | MADISON | 2025-02-05 | yes | yes |
| 608-962 | T-Mobile | BANGOR | 2025-02-28 | yes | yes |
| 608-963 | UNITED STATES CELLULAR - WI | BARABOO | – | yes | yes |
| 608-964 | T-Mobile | BRIGGSVL | 2025-02-28 | yes | yes |
| 608-965 | Brightspeed | SHULLSBURG | – | yes | yes |
| 608-966 | UTELCO, INC. | BROWNTOWN | – | yes | yes |
| 608-967 | Frontier | HOLLANDALE | – | yes | yes |
| 608-968 | Brightspeed | WIOTA | – | yes | yes |
| 608-969 | TON80 COMMUNICATIONS, LLC | WIOTA | 2022-02-17 | yes | yes |
| 608-970 | T-Mobile | PORTAGE | 2025-02-28 | yes | yes |
| 608-971 | T-Mobile | ELROY | 2025-03-18 | yes | yes |
| 608-972 | T-Mobile | BOSCOBEL | 2025-03-18 | yes | yes |
| 608-973 | UNITED STATES CELLULAR - WI | BRODHEAD | 2025-04-04 | yes | yes |
| 608-974 | AT&T | JANESVILLE | 2025-04-23 | yes | yes |
| 608-975 | AT&T | BELLEVILLE | 2016-01-22 | yes | yes |
| 608-977 | AT&T | MADISON | 2015-04-28 | yes | yes |
| 608-978 | TON80 COMMUNICATIONS, LLC | MARSHALL | 2022-03-01 | yes | yes |
| 608-979 | Charter | VIROQUA | – | yes | yes |
| 608-980 | T-Mobile | REEDSBURG | 2025-05-23 | yes | yes |
| 608-981 | Frontier | BRIGGSVL | – | yes | yes |
| 608-982 | Vonage | MADISON | 2018-03-23 | yes | yes |
| 608-983 | LA VALLE TEL. COOP. | CAZENOVIA | – | – | yes |
| 608-984 | AT&T | MADISON | 2025-08-06 | yes | yes |
| 608-985 | LA VALLE TEL. COOP. | LA VALLE | – | – | yes |
| 608-986 | Frontier | LIME RIDGE | – | yes | yes |
| 608-987 | Frontier | MINERAL PT | – | yes | yes |
| 608-988 | GRANTLAND TELECOM, INC. | MOUNT HOPE | – | yes | yes |
| 608-989 | Brightspeed | BLAIR | – | – | yes |
| 608-990 | Onvoy | BARABOO | 2025-08-21 | yes | yes |
| 608-991 | Onvoy | BELOIT | 2025-08-21 | yes | yes |
| 608-992 | TON80 COMMUNICATIONS, LLC | SABIN | 2022-02-24 | yes | yes |
| 608-993 | Onvoy | COBB | 2025-08-21 | yes | yes |
| 608-994 | GRANTLAND TELECOM, INC. | BLOOMINGTN | – | yes | yes |
| 608-995 | TON80 COMMUNICATIONS, LLC | VERONA | 2022-03-18 | yes | yes |
| 608-996 | GRANTLAND TELECOM, INC. | BAGLEY | – | – | yes |
| 608-997 | TON80 COMMUNICATIONS, LLC | WAUNAKEE | 2022-02-24 | yes | yes |
| 608-998 | TON80 COMMUNICATIONS, LLC | VIOLA | 2022-02-28 | yes | yes |
| 608-999 | Onvoy | MADISON | 2015-02-18 | yes | yes |
Frequently asked
How many prefixes does area code 608 have?
785 NXX blocks are assigned of 786 possible. Each block is 10,000 consecutive numbers, so the code currently covers about 7,850 thousand-number ranges across 159 rate centers.
What do the first three digits after 608 tell me?
They identify the block, which tells you the rate center it was allocated to and the carrier that received it. They do not tell you who serves the number today: portability moves numbers between carriers, and pooling splits a block between several of them.
Is a 608 prefix tied to a specific town?
To a rate center, which is billing geography rather than a town. NANPA abbreviates rate center names to ten characters and in large metros uses zone codes, so the name is a NANPA label, not a place name.
What does “pooled” mean in the 608 table?
That the block is in thousands-block pooling: carriers draw 1,000-number lots from it instead of taking all 10,000. 588 of 608's blocks are pooled, which is how regulators slowed down area code exhaustion – and why one prefix can belong to several carriers.
Source and limits
NANPA CO Code Assignment Records, all states, utilized codes, file updated 11/01/2026 – the rows where the record's Use field is “AS” (assigned). Unavailable codes are excluded. The records say who received a block and when, not who serves a particular number today.
More about this code: overview · carriers · spam complaints · local time