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.

Sturgeon Bay, WI

NPA-NXX BLOCK Switch OCN LATA LIR Eff date Disc date
920-256 A APPLWI01XEX  6529 T-MOBILE USA, INC. 350      
920-256 0   5562 METROPCS, INC. 350      
920-256 1   5562 METROPCS, INC. 350      
920-256 2   6529 T-MOBILE USA, INC. 350      
920-256 3   6529 T-MOBILE USA, INC. 350      
920-256 4   5562 METROPCS, INC. 350      
920-256 5   6529 T-MOBILE USA, INC. 350      
920-256 6   6529 T-MOBILE USA, INC. 350      
920-256 7   6529 T-MOBILE USA, INC. 350      
920-256 8   6529 T-MOBILE USA, INC. 350      
920-256 9   6529 T-MOBILE USA, INC. 350      
920-333 A APPLWI01XEX  5562 METROPCS, INC. 350      
920-333 0   5562 METROPCS, INC. 350      
920-333 1   007F BANDWIDTH.COM CLEC, LLC - WI 350   2010-08-15   
920-333 2   007F BANDWIDTH.COM CLEC, LLC - WI 350   2013-11-03   
920-333 3   007F BANDWIDTH.COM CLEC, LLC - WI 350   2014-06-20   
920-333 4   007F BANDWIDTH.COM CLEC, LLC - WI 350   2015-04-13   
920-333 5   227F PEERLESS NETWORK OF WISCONSIN, LLC - WI 350   2016-01-30   
920-333 7   145J TERRA NOVA TELECOM INC. 350   2023-08-10   
920-333 8   007F BANDWIDTH.COM CLEC, LLC - WI 350   2016-08-21   
920-473 A GNBYWIEL1MD  5489 LEVEL 3 COMMUNICATIONS, LLC - WI 350      
920-473 0   6529 T-MOBILE USA, INC. 350   2021-11-11   
920-473 1   6529 T-MOBILE USA, INC. 350   2021-11-11   
920-473 2   5489 LEVEL 3 COMMUNICATIONS, LLC - WI 350   2013-01-14   
920-473 3   6529 T-MOBILE USA, INC. 350   2021-11-11   
920-473 4   5489 LEVEL 3 COMMUNICATIONS, LLC - WI 350      
920-473 5   516C AT&T CORP. 350   2012-12-06   
920-473 6   7216 TELEPORT COMMUNICATIONS AMERICA, LLC WI 350   2012-03-15   
920-473 7   225C ONVOY, LLC - WI 350   2016-04-18   
920-473 8   225C ONVOY, LLC - WI 350   2016-04-18   
920-473 9   939H COMMIO, LLC 350   2022-08-21   
920-493 A GNBYWIEMCM6  6692 NEW CELL DBA CELLCOM 350      
920-495 A GNBYWIEMCM6  6692 NEW CELL DBA CELLCOM 350      
920-559 A MNSHWIDQ1MD  6274 UNITED STATES CELLULAR - WI 350      
920-559 0   6274 UNITED STATES CELLULAR - WI 350      
920-559 1   6274 UNITED STATES CELLULAR - WI 350      
920-559 2   6274 UNITED STATES CELLULAR - WI 350      
920-559 3   6274 UNITED STATES CELLULAR - WI 350      
920-559 4   624H ONVOY SPECTRUM, LLC 350   2021-06-22   
920-559 5   766H INTEGRATED PATH COMMUNICATIONS, LLC - WI 350   2018-07-13   
920-559 6   6274 UNITED STATES CELLULAR - WI 350      
920-559 7   6274 UNITED STATES CELLULAR - WI 350      
920-559 8   6274 UNITED STATES CELLULAR - WI 350      
920-559 9   6274 UNITED STATES CELLULAR - WI 350      
920-603 A APPLWI01XEX  6529 T-MOBILE USA, INC. 350      
920-603 0   6529 T-MOBILE USA, INC. 350      
920-603 8   6529 T-MOBILE USA, INC. 350      
920-695 A   225C ONVOY, LLC - WI 350      
920-695 0   698E MICHIGAN WIRELESS, LLC DBA BUG TUSSEL WIRELESS 350   2009-06-07   
920-695 1   698E MICHIGAN WIRELESS, LLC DBA BUG TUSSEL WIRELESS 350   2009-06-07   
920-695 2   698E MICHIGAN WIRELESS, LLC DBA BUG TUSSEL WIRELESS 350   2009-06-07   
920-695 3   7229 MCIMETRO ACCESS TRANSMISSION SERVICES LLC 350   2011-05-13   
920-695 4   3839 CHARTER FIBERLINK, LLC - WI 350   2022-09-03   
920-695 5   225C ONVOY, LLC - WI 350   2016-05-04   
920-695 6   225C ONVOY, LLC - WI 350   2016-05-04   
920-724 A GNBYWIEMDS1  6183 NET LEC, INC. 350      
920-724 0   6183 NET LEC, INC. 350      
920-724 1   007F BANDWIDTH.COM CLEC, LLC - WI 350   2008-11-22   
920-724 4   225C ONVOY, LLC - WI 350   2021-01-28   
920-724 5   225C ONVOY, LLC - WI 350   2021-01-28   
920-724 6   516J TON80 COMMUNICATIONS, LLC 350   2021-09-09   
920-724 7   6183 NET LEC, INC. 350      
920-724 9   6183 NET LEC, INC. 350      
920-743 A STBYWI11RS0  9327 WISCONSIN BELL INC 350      
920-746 A STBYWI11RS0  9327 WISCONSIN BELL INC 350      
920-818 A HULLWI01GT0  3839 CHARTER FIBERLINK, LLC - WI 350      
920-818 0   3839 CHARTER FIBERLINK, LLC - WI 350   2005-12-08   
920-818 1   3839 CHARTER FIBERLINK, LLC - WI 350   2011-06-24   
920-818 3   225C ONVOY, LLC - WI 350   2023-10-28   
920-818 4   225C ONVOY, LLC - WI 350   2023-10-28   
920-818 5   225C ONVOY, LLC - WI 350   2023-10-28   
920-818 6   225C ONVOY, LLC - WI 350   2023-10-28   
920-818 7   225C ONVOY, LLC - WI 350   2023-10-28   
920-818 8   508J CENTURYLINK COMMUNICATIONS, LLC 350   2014-11-25   
920-818 9   227F PEERLESS NETWORK OF WISCONSIN, LLC - WI 350   2019-09-25   

Last updated: Thu, 29 Jan 2026 14:35:03 UTC

Sponsored by: Callcentric - VoIP Internet phone service

Like this site? We accept donations via PayPal.