Local Calling Guide

Area code/prefix search

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NPA: 414 [Rate centres in NPA 414] [Dial plan for NPA 414]

NXX: 377

NPA-NXX BLOCK Rate Centre Region Switch OCN LATA LIR Eff date Disc date
414-377 A Milwaukee Zone 3 WI MILWWIDK6MD  5489 LEVEL 3 COMMUNICATIONS, LLC - WI 356      
414-377 0 Milwaukee Zone 3 WI MILWWIDK6MD  5489 LEVEL 3 COMMUNICATIONS, LLC - WI 356   2005-09-16   
414-377 1 Milwaukee Zone 3 WI PEWTWICI7MD  6529 T-MOBILE USA, INC. 356   2007-02-22   
414-377 2 Milwaukee Zone 3 WI PEWTWICI7MD  6529 T-MOBILE USA, INC. 356   2008-06-06   
414-377 3 Milwaukee Zone 3 WI MILWWI12XWX  007F BANDWIDTH.COM CLEC, LLC - WI 356   2010-07-31   
414-377 4 Milwaukee Zone 3 WI MILWWIDK6MD  5489 LEVEL 3 COMMUNICATIONS, LLC - WI 356      
414-377 5 Milwaukee Zone 3 WI MILWWI12XWX  007F BANDWIDTH.COM CLEC, LLC - WI 356   2019-03-11   
414-377 6 Milwaukee Zone 3 WI MILWWIAUDS1  225C ONVOY, LLC - WI 356   2019-04-04   
414-377 7 Milwaukee Zone 3 WI MILWWIAUDS1  225C ONVOY, LLC - WI 356   2019-04-04   
414-377 8 Milwaukee Zone 3 WI   793K TWC IP ENABLED SERVICES, LLC 356   2010-12-03   
414-377 9 Milwaukee Zone 3 WI   793K TWC IP ENABLED SERVICES, LLC 356   2014-07-25   

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

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