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: 507

NPA-NXX BLOCK Rate Centre Region Switch OCN LATA LIR Eff date Disc date
920-507 A Sherwood WI   793K TWC IP ENABLED SERVICES, LLC 350      
920-507 0 Sherwood WI   793K TWC IP ENABLED SERVICES, LLC 350      
920-507 1 Sherwood WI MNSHWIDQCM0  6274 UNITED STATES CELLULAR - WI 350   2008-08-28   
920-507 2 Sherwood WI GNBYWI01XHX  624H ONVOY SPECTRUM, LLC 350   2021-06-22   
920-507 3 Sherwood WI GNBYWI01VMD  225C ONVOY, LLC - WI 350   2023-10-28   
920-507 4 Sherwood WI GNBYWI01VMD  225C ONVOY, LLC - WI 350   2023-10-28   
920-507 5 Sherwood WI GNBYWI01VMD  225C ONVOY, LLC - WI 350   2020-01-06   
920-507 6 Sherwood WI   6529 T-MOBILE USA, INC. 350   2025-02-22   
920-507 7 Sherwood WI CRVTWIXA4MD  508J CENTURYLINK COMMUNICATIONS, LLC 350   2017-10-24   
920-507 8 Sherwood WI   145J TERRA NOVA TELECOM INC. 350   2026-05-06   

Last updated: Tue, 31 Mar 2026 13:56:49 UTC

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