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: 545

NPA-NXX BLOCK Rate Centre Region Switch OCN LATA LIR Eff date Disc date
920-545 A Watertown WI MILWWIDK6MD  5489 LEVEL 3 COMMUNICATIONS, LLC - WI 356      
920-545 0 Watertown WI   5489 LEVEL 3 COMMUNICATIONS, LLC - WI 356   2005-09-16   
920-545 1 Watertown WI   225C ONVOY, LLC - WI 356   2013-04-12   
920-545 2 Watertown WI   7229 MCIMETRO ACCESS TRANSMISSION SERVICES LLC 356   2007-02-07   
920-545 3 Watertown WI   495J STRATUS NETWORKS 356   2020-09-30   
920-545 4 Watertown WI   5489 LEVEL 3 COMMUNICATIONS, LLC - WI 356      
920-545 5 Watertown WI   007F BANDWIDTH.COM CLEC, LLC - WI 356   2013-09-14   
920-545 6 Watertown WI   227F PEERLESS NETWORK OF WISCONSIN, LLC - WI 356   2020-11-21   
920-545 7 Watertown WI   508J CENTURYLINK COMMUNICATIONS, LLC 356   2014-12-31   
920-545 8 Watertown WI   6534 NEW CINGULAR WIRELESS PCS, LLC - IL 356   2015-12-03   
920-545 9 Watertown WI   6534 NEW CINGULAR WIRELESS PCS, LLC - IL 356   2015-12-03   

Last updated: Thu, 01 Jan 2026 03:59:49 UTC

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