Local Calling Guide

Area code/prefix search

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NPA: 920 [Rate centres in NPA 920] [Dial plan for NPA 920]

NXX: 340

NPA-NXX BLOCK Rate Centre Region Switch OCN LATA LIR Eff date Disc date
920-340 A Chilton WI MILWWIDKCM1  9759 METRO SOUTHWEST PCS, LLP 356      
920-340 0 Chilton WI   9759 METRO SOUTHWEST PCS, LLP 356      
920-340 1 Chilton WI   9759 METRO SOUTHWEST PCS, LLP 356      
920-340 2 Chilton WI   9759 METRO SOUTHWEST PCS, LLP 356      
920-340 3 Chilton WI   7229 MCIMETRO ACCESS TRANSMISSION SERVICES LLC 356   2010-12-15   
920-340 4 Chilton WI   6508 CELLCO PARTNERSHIP DBA VERIZON WIRELESS - WI 356   2011-02-14   
920-340 5 Chilton WI   6274 UNITED STATES CELLULAR - WI 356   2018-10-15   
920-340 6 Chilton WI   225C ONVOY, LLC - WI 356   2020-03-22   
920-340 7 Chilton WI   225C ONVOY, LLC - WI 356   2020-03-22   
920-340 8 Chilton WI   225C ONVOY, LLC - WI 356   2019-04-01   
920-340 9 Chilton WI   225C ONVOY, LLC - WI 356   2019-04-01   

Last updated: Thu, 29 Jan 2026 14:35:03 UTC

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