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: 503

NPA-NXX BLOCK Rate Centre Region Switch OCN LATA LIR Eff date Disc date
920-503 A Pulaski WI   793K TWC IP ENABLED SERVICES, LLC 350      
920-503 0 Pulaski WI   793K TWC IP ENABLED SERVICES, LLC 350   2009-09-14   
920-503 1 Pulaski WI GNBYWIEL3MD  939H COMMIO, LLC 350   2021-07-24   
920-503 2 Pulaski WI   520K TDS METROCOM, LLC 350   2022-12-19   
920-503 3 Pulaski WI   766H INTEGRATED PATH COMMUNICATIONS, LLC - WI 350   2018-07-13   
920-503 4 Pulaski WI GNBYWIEL1MD  5489 LEVEL 3 COMMUNICATIONS, LLC - WI 350   2022-04-29   
920-503 6 Pulaski WI STPTWI01HMD  7216 TELEPORT COMMUNICATIONS AMERICA, LLC WI 350   2021-12-01   
920-503 7 Pulaski WI   145J TERRA NOVA TELECOM INC. 350   2025-07-20   
920-503 8 Pulaski WI GNBYWIEL3MD  939H COMMIO, LLC 350   2021-07-24   

Last updated: Wed, 04 Mar 2026 03:00:52 UTC

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