Local Calling Guide

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Waterloo, WI

NPA-NXX BLOCK Switch OCN LATA LIR Eff date Disc date
920-478 A WTRLWIXARS0  0886 FRONTIER NORTH INC. - WI 356      
920-478 0   145J TERRA NOVA TELECOM INC. 356   2025-08-21   
920-478 1 WTRLWIXARS0  0886 FRONTIER NORTH INC. - WI 356      
920-478 2 WTRLWIXARS0  0886 FRONTIER NORTH INC. - WI 356      
920-478 3 WTRLWIXARS0  0886 FRONTIER NORTH INC. - WI 356      
920-478 4 WTRLWIXARS0  0886 FRONTIER NORTH INC. - WI 356      
920-478 5 MILWWIHEVMD  7216 TELEPORT COMMUNICATIONS AMERICA, LLC WI 356   2003-08-06   
920-478 6 MILWWI12XWX  007F BANDWIDTH.COM CLEC, LLC - WI 356   2011-10-21   
920-478 7 WTRLWIXARS0  0886 FRONTIER NORTH INC. - WI 356      
920-478 8   792K CHARTER IP ENABLED SERVICES, LLC 356   2006-03-25   
920-478 9 WTRLWIXARS0  0886 FRONTIER NORTH INC. - WI 356      
920-561 A MILWWI12XWX  007F BANDWIDTH.COM CLEC, LLC - WI 356      
920-561 1 MILWWI12XWX  007F BANDWIDTH.COM CLEC, LLC - WI 356   2013-12-20   
920-561 2 MILWWIAUDS1  225C ONVOY, LLC - WI 356   2020-03-22   
920-561 3 MILWWIAUDS1  225C ONVOY, LLC - WI 356   2020-03-22   
920-561 4 MILWWI12XTX  624H ONVOY SPECTRUM, LLC 356   2021-06-27   
920-561 5 MILWWIAUDS1  225C ONVOY, LLC - WI 356   2018-08-19   
920-561 6 MILWWIHEVMD  7216 TELEPORT COMMUNICATIONS AMERICA, LLC WI 356   2016-03-21   
920-561 7 MILWWI45XBX  508J CENTURYLINK COMMUNICATIONS, LLC 356   2015-01-02   
920-561 8 MILWWIAUDS1  225C ONVOY, LLC - WI 356   2021-03-26   
920-561 9 MILWWIAUDS1  225C ONVOY, LLC - WI 356   2021-03-26   
920-608 A MILWWIAU23Z  839J EON TELECOM, INC. 356   2024-11-29   
920-608 0 MILWWIAU23Z  839J EON TELECOM, INC. 356   2024-11-29   
920-608 1 MILWWIAU23Z  839J EON TELECOM, INC. 356   2024-11-29   

Last updated: Thu, 16 Oct 2025 03:04:18 UTC

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