Local Calling Guide

Area code/prefix search

Search area code/prefix (NPA/NXX)
  • Effective date searches are available only for US area codes. Our sources for non-US NPA-NXX data do not provide this information.
  • If you want to search an entire area code regardless of activity, leave both the next and past days fields set to zero.

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

NXX: 449

NPA-NXX BLOCK Rate Centre Region Switch OCN LATA LIR Eff date Disc date
920-449 A Plymouth WI MILWWIDK6MD  5489 LEVEL 3 COMMUNICATIONS, LLC - WI 356   2020-12-28   
920-449 1 Plymouth WI MILWWIDK6MD  5489 LEVEL 3 COMMUNICATIONS, LLC - WI 356   2005-09-16   
920-449 2 Plymouth WI MILWWIDKCM1  9759 METRO SOUTHWEST PCS, LLP 356   2010-09-11   
920-449 3 Plymouth WI MILWWIDK6MD  5489 LEVEL 3 COMMUNICATIONS, LLC - WI 356   2011-05-27   
920-449 4 Plymouth WI MILWWIDK6MD  5489 LEVEL 3 COMMUNICATIONS, LLC - WI 356      
920-449 5 Plymouth WI PLMOWIXA1MD  623D TIME WARNER CABLE INFORMATION SVCS (WISCONSIN) WI 356   2005-08-15   
920-449 7 Plymouth WI PLMOWIXADS0  0886 FRONTIER NORTH INC. - WI 356   2006-12-17   
920-449 8 Plymouth WI MILXWIILCMD  6508 CELLCO PARTNERSHIP DBA VERIZON WIRELESS - WI 356   2018-09-19   
920-449 9 Plymouth WI MILWWIAU03Z  516J TON80 COMMUNICATIONS LLC 356   2021-10-14   

Last updated: Tue, 24 Jan 2023 03:01:57 UTC

Sponsored by: Execulink Telecom

Like this site? We accept donations via PayPal.