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: 414 [Rate centres in NPA 414] [Dial plan for NPA 414]

NXX: 455

NPA-NXX BLOCK Rate Centre Region Switch OCN LATA LIR Eff date Disc date
414-455 A Milwaukee Zone 1 WI MILXWIILDS0  7229 MCIMETRO ACCESS TRANSMISSION SERVICES LLC 356      
414-455 0 Milwaukee Zone 1 WI MILWWIDK6MD  5489 LEVEL 3 COMMUNICATIONS, LLC - WI 356   2005-01-10   
414-455 1 Milwaukee Zone 1 WI MILWWIDK6MD  5489 LEVEL 3 COMMUNICATIONS, LLC - WI 356   2005-01-10   
414-455 2 Milwaukee Zone 1 WI MILWWIDK6MD  5489 LEVEL 3 COMMUNICATIONS, LLC - WI 356   2006-09-05   
414-455 3 Milwaukee Zone 1 WI MILWWI12XFX  623D TIME WARNER CABLE INFORMATION SVCS (WISCONSIN) WI 356   2008-08-27   
414-455 4 Milwaukee Zone 1 WI MILWWIDK6MD  5489 LEVEL 3 COMMUNICATIONS, LLC - WI 356   2004-07-13   
414-455 5 Milwaukee Zone 1 WI MILWWIDK6MD  5489 LEVEL 3 COMMUNICATIONS, LLC - WI 356   2004-12-11   
414-455 6 Milwaukee Zone 1 WI MILWWIDK6MD  5489 LEVEL 3 COMMUNICATIONS, LLC - WI 356   2007-07-27   
414-455 7 Milwaukee Zone 1 WI MILWWIDK6MD  5489 LEVEL 3 COMMUNICATIONS, LLC - WI 356   2006-09-05   
414-455 8 Milwaukee Zone 1 WI MILWWI12XFX  623D TIME WARNER CABLE INFORMATION SVCS (WISCONSIN) WI 356   2008-08-27   
414-455 9 Milwaukee Zone 1 WI MILXWIILDS0  7229 MCIMETRO ACCESS TRANSMISSION SERVICES LLC 356   2003-12-19   

Last updated: Fri, 22 Mar 2024 03:02:44 UTC

Sponsored by: LES.NET

Like this site? We accept donations via PayPal.