Local Calling Guide

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NPA: 608 [Rate centres in NPA 608] [Dial plan for NPA 608]

NXX: 623

NPA-NXX BLOCK Rate Centre Region Switch OCN LATA LIR Eff date Disc date
608-623 A Cobb WI COBBWIXARS0  0886 FRONTIER NORTH INC. - WI 354      
608-623 0 Cobb WI   792K CHARTER IP ENABLED SERVICES, LLC 354   2007-01-20   
608-623 1 Cobb WI   3043 MH TELECOM, INC. - WI 354   2024-02-11   
608-623 2 Cobb WI   0886 FRONTIER NORTH INC. - WI 354      
608-623 3 Cobb WI   0886 FRONTIER NORTH INC. - WI 354      
608-623 4 Cobb WI   624H ONVOY SPECTRUM, LLC 354   2021-06-24   
608-623 5 Cobb WI   225C ONVOY, LLC - WI 354   2021-07-31   
608-623 6 Cobb WI   225C ONVOY, LLC - WI 354   2020-05-25   
608-623 7 Cobb WI   508J CENTURYLINK COMMUNICATIONS, LLC 354   2014-12-29   
608-623 8 Cobb WI   225C ONVOY, LLC - WI 354   2021-04-04   
608-623 9 Cobb WI   145J TERRA NOVA TELECOM INC. 354   2025-08-10   

Last updated: Tue, 13 Jan 2026 21:50:02 UTC

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