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: 401

NPA-NXX BLOCK Rate Centre Region Switch OCN LATA LIR Eff date Disc date
608-401 A Mazomanie WI   792K CHARTER IP ENABLED SERVICES, LLC 354      
608-401 0 Mazomanie WI   5489 LEVEL 3 COMMUNICATIONS, LLC - WI 354   2023-03-26   
608-401 1 Mazomanie WI   792K CHARTER IP ENABLED SERVICES, LLC 354   2007-01-20   
608-401 2 Mazomanie WI   225C ONVOY, LLC - WI 354   2021-07-25   
608-401 3 Mazomanie WI   624H ONVOY SPECTRUM, LLC 354   2021-06-24   
608-401 4 Mazomanie WI   225C ONVOY, LLC - WI 354   2019-08-29   
608-401 6 Mazomanie WI   624H ONVOY SPECTRUM, LLC 354   2021-11-27   
608-401 7 Mazomanie WI   225C ONVOY, LLC - WI 354   2023-07-22   
608-401 8 Mazomanie WI   225C ONVOY, LLC - WI 354   2021-04-05   
608-401 9 Mazomanie WI   624H ONVOY SPECTRUM, LLC 354   2021-11-27   

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

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