Local Calling Guide

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Mount Vernon, WI

NPA-NXX BLOCK Switch OCN LATA LIR Eff date Disc date
608-691 A   792K CHARTER IP ENABLED SERVICES, LLC 354      
608-691 1   792K CHARTER IP ENABLED SERVICES, LLC 354   2009-12-14   
608-691 2   225C ONVOY, LLC - WI 354   2021-04-05   
608-691 3   624H ONVOY SPECTRUM, LLC 354   2021-06-24   
608-691 4   225C ONVOY, LLC - WI 354   2021-07-25   
608-691 6   225C ONVOY, LLC - WI 354   2020-01-06   
608-691 7   508J CENTURYLINK COMMUNICATIONS, LLC 354   2017-10-24   
608-832 A MTVRWIXARP0  0917 MT. VERNON TEL. CO. 354      
608-832 0   0917 MT. VERNON TEL. CO. 354      
608-832 1   0917 MT. VERNON TEL. CO. 354      
608-832 4   0917 MT. VERNON TEL. CO. 354      
608-832 6   0917 MT. VERNON TEL. CO. 354      
608-832 7   145J TERRA NOVA TELECOM INC. 354   2025-08-22   
608-832 8   0917 MT. VERNON TEL. CO. 354      

Last updated: Thu, 29 Jan 2026 14:35:03 UTC

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