Local Calling Guide

Area code/prefix search

Search area code/prefix (NPA/NXX)
  • Effective date searches are available only for US area codes. Our sources for non-US NPA-NXX data do not provide this information.
  • If you want to search an entire area code regardless of activity, leave both the next and past days fields set to zero.

Baraboo, WI

1 2 >>

NPA-NXX BLOCK Switch OCN LATA LIR Eff date Disc date
608-355 A BARBWI01DSA  0924 BRIGHTSPEED OF NORTH CENTRAL WISCONSIN, LLC 354      
608-356 A BARBWI01DSA  0924 BRIGHTSPEED OF NORTH CENTRAL WISCONSIN, LLC 354      
608-389 A MDSNWI11XIX  007F BANDWIDTH.COM CLEC, LLC - WI 354      
608-389 0 MDSNWI11XIX  007F BANDWIDTH.COM CLEC, LLC - WI 354   2020-11-02   
608-389 1 MDSNWI11XAY  624H ONVOY SPECTRUM, LLC 354   2021-12-05   
608-389 3 MDSNWI11XAY  624H ONVOY SPECTRUM, LLC 354   2021-06-24   
608-389 4 MDSNWI11XAY  624H ONVOY SPECTRUM, LLC 354   2021-12-05   
608-389 5 MDSNWI11XAX  225C ONVOY, LLC - WI 354   2021-01-15   
608-389 6 MDSNWI11XAX  225C ONVOY, LLC - WI 354   2021-01-15   
608-389 7 MDSNWI11XAX  225C ONVOY, LLC - WI 354   2021-01-15   
608-389 8 MDSNWI11XAX  225C ONVOY, LLC - WI 354   2021-01-15   
608-389 9   145J TERRA NOVA TELECOM INC. 354   2025-08-10   
608-393 A MDSNWIPU2MD  6274 UNITED STATES CELLULAR - WI 354      
608-393 0 MDSNWIPU2MD  6274 UNITED STATES CELLULAR - WI 354      
608-393 1 MDSNWIPU2MD  6274 UNITED STATES CELLULAR - WI 354      
608-393 2 MDSNWIPU2MD  6274 UNITED STATES CELLULAR - WI 354      
608-393 3 MDSNWIPU2MD  6274 UNITED STATES CELLULAR - WI 354      
608-393 4 MDSNWIPU2MD  6274 UNITED STATES CELLULAR - WI 354      
608-393 5 MDSNWIPU2MD  6274 UNITED STATES CELLULAR - WI 354      
608-393 6 MDSNWIPU2MD  6274 UNITED STATES CELLULAR - WI 354      
608-393 7 MDSNWIPU2MD  6274 UNITED STATES CELLULAR - WI 354      
608-393 8 MDSNWIPU2MD  6274 UNITED STATES CELLULAR - WI 354      
608-393 9 MDSNWIPU2MD  6274 UNITED STATES CELLULAR - WI 354      
608-402 A BURKWIAE1MD  698E MICHIGAN WIRELESS, LLC DBA BUG TUSSEL WIRELESS 354      
608-402 0 BURKWIAE1MD  698E MICHIGAN WIRELESS, LLC DBA BUG TUSSEL WIRELESS 354   2010-09-13   
608-402 1 BURKWIAE1MD  698E MICHIGAN WIRELESS, LLC DBA BUG TUSSEL WIRELESS 354   2010-09-13   
608-402 2 BURKWIAE1MD  698E MICHIGAN WIRELESS, LLC DBA BUG TUSSEL WIRELESS 354   2010-09-13   
608-402 3 MDSNWI11XEY  6508 CELLCO PARTNERSHIP DBA VERIZON WIRELESS - WI 354   2013-11-01   
608-402 4 MDSNWI025MD  5489 LEVEL 3 COMMUNICATIONS, LLC - WI 354   2012-03-22   
608-402 5 MDSNWI11XEY  6508 CELLCO PARTNERSHIP DBA VERIZON WIRELESS - WI 354   2015-06-22   
608-402 6 MDSNWI025MD  5489 LEVEL 3 COMMUNICATIONS, LLC - WI 354   2014-03-28   
608-402 7 MDSNWI11XAX  225C ONVOY, LLC - WI 354   2014-11-23   
608-402 8 LCRSWIXCIMD  508J CENTURYLINK COMMUNICATIONS, LLC 354   2014-12-04   
608-402 9 MDSNWI11XQX  6534 NEW CINGULAR WIRELESS PCS, LLC - IL 354   2014-08-29   
608-434 A MDSNWIPU2MD  6274 UNITED STATES CELLULAR - WI 354      
608-434 0 MDSNWIPU2MD  6274 UNITED STATES CELLULAR - WI 354      
608-434 1 MDSNWIPU2MD  6274 UNITED STATES CELLULAR - WI 354      
608-434 2 MDSNWIPU2MD  6274 UNITED STATES CELLULAR - WI 354      
608-434 3 MDSNWIPU2MD  6274 UNITED STATES CELLULAR - WI 354      
608-434 4 MDSNWIPU2MD  6274 UNITED STATES CELLULAR - WI 354      
608-434 5 MDSNWIPU2MD  6274 UNITED STATES CELLULAR - WI 354      
608-434 6 MDSNWIPU2MD  6274 UNITED STATES CELLULAR - WI 354      
608-434 7 MDSNWIPU2MD  6274 UNITED STATES CELLULAR - WI 354      
608-434 8 MDSNWIPU2MD  6274 UNITED STATES CELLULAR - WI 354      
608-434 9 MDSNWIPU2MD  6274 UNITED STATES CELLULAR - WI 354      
608-448 A MDSNWI11X4Y  6529 T-MOBILE USA, INC. 354      
608-448 0 MDSNWIGJ4MD  520K TDS METROCOM, LLC 354   2006-01-07   
608-448 1 MDSNWI11X4Y  6529 T-MOBILE USA, INC. 354   2007-07-31   
608-448 2 FTBGWIDK1MD  792K CHARTER IP ENABLED SERVICES, LLC 354   2004-11-26   
608-448 3 MDSNWI025MD  5489 LEVEL 3 COMMUNICATIONS, LLC - WI 354   2005-02-26   
608-448 4 FTBGWIDK1MD  792K CHARTER IP ENABLED SERVICES, LLC 354   2006-11-10   
608-448 5 MDSNWI11XQX  6534 NEW CINGULAR WIRELESS PCS, LLC - IL 354   2004-05-13   
608-448 6 MDSNWI11XIX  007F BANDWIDTH.COM CLEC, LLC - WI 354   2008-11-21   
608-448 7 MDSNWI11XEY  6508 CELLCO PARTNERSHIP DBA VERIZON WIRELESS - WI 354   2010-08-15   
608-448 8 MDSNWI11X4Y  6529 T-MOBILE USA, INC. 354   2005-01-09   
608-448 9 MDSNWI11X4Y  6529 T-MOBILE USA, INC. 354      
608-477 A MDSNWI11XEY  6508 CELLCO PARTNERSHIP DBA VERIZON WIRELESS - WI 354      
608-477 0 MDSNWI11XEY  6508 CELLCO PARTNERSHIP DBA VERIZON WIRELESS - WI 354      
608-477 1 MDSNWI11XEY  6508 CELLCO PARTNERSHIP DBA VERIZON WIRELESS - WI 354      
608-477 2 MDSNWI11XEY  6508 CELLCO PARTNERSHIP DBA VERIZON WIRELESS - WI 354      
608-477 3 MDSNWIPU2MD  6274 UNITED STATES CELLULAR - WI 354   2007-03-30   
608-477 4 MDSNWI025MD  5489 LEVEL 3 COMMUNICATIONS, LLC - WI 354   2010-04-16   
608-477 5 MDSNWI11XEY  6508 CELLCO PARTNERSHIP DBA VERIZON WIRELESS - WI 354   2011-01-22   
608-477 6 MDSNWI11X4Y  6529 T-MOBILE USA, INC. 354   2011-04-06   
608-477 7 MDSNWI11XEY  6508 CELLCO PARTNERSHIP DBA VERIZON WIRELESS - WI 354   2011-02-14   
608-477 8 MDSNWI11XEY  6508 CELLCO PARTNERSHIP DBA VERIZON WIRELESS - WI 354   2008-01-11   
608-477 9 MDSNWI11XEY  6508 CELLCO PARTNERSHIP DBA VERIZON WIRELESS - WI 354      
608-581 A MDSNWI11XEY  6508 CELLCO PARTNERSHIP DBA VERIZON WIRELESS - WI 354      
608-581 0 MDSNWI11XEY  6508 CELLCO PARTNERSHIP DBA VERIZON WIRELESS - WI 354   2015-12-26   
608-581 1 MDSNWI11XQX  6534 NEW CINGULAR WIRELESS PCS, LLC - IL 354   2016-07-11   
608-581 2 MDSNWI11XQX  6534 NEW CINGULAR WIRELESS PCS, LLC - IL 354   2018-11-03   
608-581 3 MDSNWI11XOY  7229 MCIMETRO ACCESS TRANSMISSION SERVICES LLC 354   2016-02-05   
608-581 4 MDSNWI02ZMD  7216 TELEPORT COMMUNICATIONS AMERICA, LLC WI 354   2017-04-03   
608-581 5 MDSNWI11XAX  225C ONVOY, LLC - WI 354   2019-08-29   
608-581 6 MDSNWI11XQX  6534 NEW CINGULAR WIRELESS PCS, LLC - IL 354   2020-03-15   
608-581 7 MDSNWI11XAX  225C ONVOY, LLC - WI 354   2020-08-28   
608-581 8 FTBGWIDK1MD  792K CHARTER IP ENABLED SERVICES, LLC 354   2017-10-29   
608-581 9 MDSNWI11XIX  007F BANDWIDTH.COM CLEC, LLC - WI 354   2019-10-21   
608-809 A MDSNWI11XAX  225C ONVOY, LLC - WI 354      
608-809 0 MDSNWI11XAX  225C ONVOY, LLC - WI 354   2024-03-03   
608-809 1 MDSNWI11XAX  225C ONVOY, LLC - WI 354   2024-04-19   
608-809 2 MDSNWI11XAX  225C ONVOY, LLC - WI 354   2023-08-26   
608-809 3 MDSNWI11X4Y  6529 T-MOBILE USA, INC. 354   2023-08-27   
608-809 4 MDSNWI11X4Y  6529 T-MOBILE USA, INC. 354   2023-08-27   
608-809 5 MDSNWI11X4Y  5562 METROPCS, INC. 354   2025-03-30   
608-809 9 MDSNWI11XQX  6534 NEW CINGULAR WIRELESS PCS, LLC - IL 354   2023-12-11   
608-963 A MDSNWIPU2MD  6274 UNITED STATES CELLULAR - WI 354      
608-963 0 MDSNWIPU2MD  6274 UNITED STATES CELLULAR - WI 354      
608-963 1 MDSNWIPU2MD  6274 UNITED STATES CELLULAR - WI 354      
608-963 2 MDSNWIPU2MD  6274 UNITED STATES CELLULAR - WI 354      
608-963 3 MDSNWIPU2MD  6274 UNITED STATES CELLULAR - WI 354      
608-963 4 MDSNWIPU2MD  6274 UNITED STATES CELLULAR - WI 354      
608-963 5 MDSNWIPU2MD  6274 UNITED STATES CELLULAR - WI 354      
608-963 6 MDSNWIPU2MD  6274 UNITED STATES CELLULAR - WI 354      
608-963 7 MDSNWIPU2MD  6274 UNITED STATES CELLULAR - WI 354      
608-963 8 MDSNWIPU2MD  6274 UNITED STATES CELLULAR - WI 354      
608-963 9 MDSNWIPU2MD  6274 UNITED STATES CELLULAR - WI 354      
608-990 A MDSNWI11XAX  225C ONVOY, LLC - WI 354   2025-10-18   
608-990 0   225C ONVOY, LLC - WI 354   2026-07-24   
608-990 3 MDSNWI11XAX  225C ONVOY, LLC - WI 354   2025-10-18   

1 2 >>

Last updated: Thu, 16 Jul 2026 02:21:55 UTC

Sponsored by: VoIP Much Phone Company

Like this site? We accept donations via PayPal.