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.

Lac du Flambeau, WI

NPA-NXX BLOCK Switch OCN LATA LIR Eff date Disc date
715-388 A LDUFWIXARS0  0886 FRONTIER NORTH INC. - WI 350      
715-388 0 LDUFWIXARS0  0886 FRONTIER NORTH INC. - WI 350      
715-388 1 RHNLWIXADMD  624H ONVOY SPECTRUM, LLC 350   2021-11-27   
715-388 2 RHNLWIXADMD  624H ONVOY SPECTRUM, LLC 350   2021-11-27   
715-388 3 RHNLWIXADMD  624H ONVOY SPECTRUM, LLC 350   2021-06-21   
715-388 6 CRVTWIXA4MD  508J CENTURYLINK COMMUNICATIONS, LLC 350   2014-11-24   
715-388 7 GNBYWIEL1MD  5489 LEVEL 3 COMMUNICATIONS, LLC - WI 350   2006-08-21   
715-388 8 GNBYWIEL1MD  5489 LEVEL 3 COMMUNICATIONS, LLC - WI 350   2021-03-20   
715-588 A LDUFWIXARS0  0886 FRONTIER NORTH INC. - WI 350      
715-588 1 LDUFWIXARS0  0886 FRONTIER NORTH INC. - WI 350      
715-588 2 LDUFWIXARS0  0886 FRONTIER NORTH INC. - WI 350      
715-588 3 LDUFWIXARS0  0886 FRONTIER NORTH INC. - WI 350      
715-588 4 LDUFWIXARS0  0886 FRONTIER NORTH INC. - WI 350      
715-588 5 MRNTWI24DS0  766H INTEGRATED PATH COMMUNICATIONS, LLC - WI 350   2018-07-12   
715-588 7 LDUFWIXARS0  0886 FRONTIER NORTH INC. - WI 350      
715-588 8 RHNLWIXA9MD  225C ONVOY, LLC - WI 350   2024-03-25   
715-588 9 LDUFWIXARS0  0886 FRONTIER NORTH INC. - WI 350      

Last updated: Thu, 05 Feb 2026 23:41:55 UTC

Sponsored by: FiberConX Communications Ltd.

Like this site? We accept donations via PayPal.