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.

NPA: 920 [Rate centres in NPA 920] [Dial plan for NPA 920]

NXX: 355

NPA-NXX BLOCK Rate Centre Region Switch OCN LATA LIR Eff date Disc date
920-355 A Mapleton WI MPTNWIXARS0  0886 FRONTIER NORTH INC. - WI 356      
920-355 0 Mapleton WI MPTNWIXARS0  0886 FRONTIER NORTH INC. - WI 356      
920-355 1 Mapleton WI MILWWI12XWX  007F BANDWIDTH.COM CLEC, LLC - WI 356   2011-01-06   
920-355 2 Mapleton WI MILWWI12XWX  007F BANDWIDTH.COM CLEC, LLC - WI 356   2014-05-03   
920-355 3 Mapleton WI MILWWI12XWX  007F BANDWIDTH.COM CLEC, LLC - WI 356   2016-08-26   
920-355 4 Mapleton WI MILWWI12XFX  623D TIME WARNER CABLE INFORMATION SVCS (WISCONSIN) WI 356   2007-03-27   
920-355 5 Mapleton WI FDULWIGN0MD  3839 CHARTER FIBERLINK, LLC - WI 356   2023-06-04   
920-355 7 Mapleton WI MILWWI45XBX  508J CENTURYLINK COMMUNICATIONS, LLC 356   2014-12-31   
920-355 8 Mapleton WI MILWWIAUDS1  225C ONVOY, LLC - WI 356   2019-04-04   
920-355 9 Mapleton WI MILWWIAUDS1  225C ONVOY, LLC - WI 356   2019-04-04   

Last updated: Tue, 16 Apr 2024 01:38:01 UTC

Sponsored by: FiberConX Communications Ltd.

Like this site? We accept donations via PayPal.