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: 837

NPA-NXX BLOCK Rate Centre Region Switch OCN LATA LIR Eff date Disc date
920-837 A Casco WI CASCWIXADS0  0857 BRIGHTSPEED OF WESTERN WISCONSIN, LLC 350      
920-837 0 Casco WI   766H INTEGRATED PATH COMMUNICATIONS, LLC - WI 350   2018-07-12   
920-837 1 Casco WI   225C ONVOY, LLC - WI 350   2018-10-25   
920-837 2 Casco WI   0857 BRIGHTSPEED OF WESTERN WISCONSIN, LLC 350      
920-837 3 Casco WI   007F BANDWIDTH.COM CLEC, LLC - WI 350   2020-02-20   
920-837 4 Casco WI   145J TERRA NOVA TELECOM INC. 350   2025-07-12   
920-837 5 Casco WI   5489 LEVEL 3 COMMUNICATIONS, LLC - WI 350   2014-11-25   
920-837 6 Casco WI   225C ONVOY, LLC - WI 350   2021-07-02   
920-837 7 Casco WI   0857 BRIGHTSPEED OF WESTERN WISCONSIN, LLC 350      
920-837 8 Casco WI   624H ONVOY SPECTRUM, LLC 350   2021-06-21   

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

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