Local Calling Guide

Area code/prefix search

Search area code/prefix (NPA/NXX)
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NPA: 608 [Rate centres in NPA 608] [Dial plan for NPA 608]

NXX: 230

NPA-NXX BLOCK Rate Centre Region Switch OCN LATA LIR Eff date Disc date
608-230 A Madison WI   520K TDS METROCOM, LLC 354      
608-230 0 Madison WI   792K CHARTER IP ENABLED SERVICES, LLC 354      
608-230 1 Madison WI   520K TDS METROCOM, LLC 354      
608-230 2 Madison WI   520K TDS METROCOM, LLC 354      
608-230 3 Madison WI   520K TDS METROCOM, LLC 354      
608-230 4 Madison WI   520K TDS METROCOM, LLC 354      
608-230 5 Madison WI   792K CHARTER IP ENABLED SERVICES, LLC 354   2006-10-10   
608-230 6 Madison WI   792K CHARTER IP ENABLED SERVICES, LLC 354   2004-04-13   
608-230 7 Madison WI   520K TDS METROCOM, LLC 354      
608-230 8 Madison WI   520K TDS METROCOM, LLC 354      
608-230 9 Madison WI   520K TDS METROCOM, LLC 354      

Last updated: Fri, 25 Jul 2025 03:21:23 UTC

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