Local Calling Guide

Area code/prefix search

Search area code/prefix (NPA/NXX)
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NPA: 920 [Rate centres in NPA 920] [Dial plan for NPA 920]

NXX: 276

NPA-NXX BLOCK Rate Centre Region Switch OCN LATA LIR Eff date Disc date
920-276 A Theresa WI THRSWIXARS4  0886 FRONTIER NORTH INC. - WI 356      
920-276 0 Theresa WI   0886 FRONTIER NORTH INC. - WI 356      
920-276 1 Theresa WI   5489 LEVEL 3 COMMUNICATIONS, LLC - WI 356   2006-08-21   
920-276 2 Theresa WI   792K CHARTER IP ENABLED SERVICES, LLC 356   2007-05-11   
920-276 3 Theresa WI   225C ONVOY, LLC - WI 356   2021-06-03   
920-276 4 Theresa WI   225C ONVOY, LLC - WI 356   2021-06-03   
920-276 5 Theresa WI   624H ONVOY SPECTRUM, LLC 356   2021-06-27   
920-276 6 Theresa WI   7216 TELEPORT COMMUNICATIONS AMERICA, LLC WI 356   2018-03-30   
920-276 7 Theresa WI   508J CENTURYLINK COMMUNICATIONS, LLC 356   2015-01-05   
920-276 8 Theresa WI   225C ONVOY, LLC - WI 356   2021-04-12   
920-276 9 Theresa WI   225C ONVOY, LLC - WI 356   2021-07-02   

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

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