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: 528

NPA-NXX BLOCK Rate Centre Region Switch OCN LATA LIR Eff date Disc date
920-528 A Cascade WI CSCDWIXARS0  0886 FRONTIER NORTH INC. - WI 356      
920-528 1 Cascade WI   0886 FRONTIER NORTH INC. - WI 356      
920-528 3 Cascade WI   145J TERRA NOVA TELECOM INC. 356   2025-08-17   
920-528 5 Cascade WI   225C ONVOY, LLC - WI 356   2020-04-19   
920-528 7 Cascade WI   0886 FRONTIER NORTH INC. - WI 356      
920-528 8 Cascade WI   0886 FRONTIER NORTH INC. - WI 356      

Last updated: Thu, 01 Jan 2026 03:59:49 UTC

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