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: 313

NPA-NXX BLOCK Rate Centre Region Switch OCN LATA LIR Eff date Disc date
920-313 A Lomira WI PEWTWICI2MD  6529 T-MOBILE USA, INC. 356      
920-313 0 Lomira WI   6529 T-MOBILE USA, INC. 356      
920-313 1 Lomira WI   6529 T-MOBILE USA, INC. 356   2021-08-12   
920-313 2 Lomira WI   624H ONVOY SPECTRUM, LLC 356   2021-06-26   
920-313 3 Lomira WI   225C ONVOY, LLC - WI 356   2021-04-08   
920-313 4 Lomira WI   225C ONVOY, LLC - WI 356   2021-07-26   
920-313 5 Lomira WI   7216 TELEPORT COMMUNICATIONS AMERICA, LLC WI 356   2017-10-12   
920-313 6 Lomira WI   508J CENTURYLINK COMMUNICATIONS, LLC 356   2015-01-05   
920-313 7 Lomira WI   6529 T-MOBILE USA, INC. 356   2013-09-27   
920-313 8 Lomira WI   6529 T-MOBILE USA, INC. 356   2013-09-27   
920-313 9 Lomira WI   6529 T-MOBILE USA, INC. 356      

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

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