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: 549

NPA-NXX BLOCK Rate Centre Region Switch OCN LATA LIR Eff date Disc date
920-549 A Randolph WI MILWWI12ZMD  6274 UNITED STATES CELLULAR - WI 356      
920-549 0 Randolph WI MILWWI12ZMD  6274 UNITED STATES CELLULAR - WI 356   2021-10-14   
920-549 4 Randolph WI   145J TERRA NOVA TELECOM INC. 356   2025-08-21   
920-549 8 Randolph WI   6529 T-MOBILE USA, INC. 356   2025-02-22   

Last updated: Thu, 16 Oct 2025 03:04:18 UTC

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