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: 879

NPA-NXX BLOCK Rate Centre Region Switch OCN LATA LIR Eff date Disc date
920-879 A Waupun WI MILWWIAUDS1  225C ONVOY, LLC - WI 356      
920-879 0 Waupun WI MILWWIAUDS1  225C ONVOY, LLC - WI 356   2024-12-01   
920-879 1 Waupun WI   6529 T-MOBILE USA, INC. 356   2025-02-24   
920-879 2 Waupun WI MILWWIAUDS1  225C ONVOY, LLC - WI 356   2023-09-10   
920-879 8 Waupun WI   225C ONVOY, LLC - WI 356   2025-10-26   

Last updated: Thu, 20 Nov 2025 13:34:34 UTC

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