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: 376

NPA-NXX BLOCK Rate Centre Region Switch OCN LATA LIR Eff date Disc date
414-376 A Milwaukee Zone 5 WI MILWWIDK6MD  5489 LEVEL 3 COMMUNICATIONS, LLC - WI 356      
414-376 0 Milwaukee Zone 5 WI MILWWI12XWX  007F BANDWIDTH.COM CLEC, LLC - WI 356   2014-04-13   
414-376 1 Milwaukee Zone 5 WI MILWWI12XWX  007F BANDWIDTH.COM CLEC, LLC - WI 356   2014-04-13   
414-376 2 Milwaukee Zone 5 WI MILWWIDK6MD  5489 LEVEL 3 COMMUNICATIONS, LLC - WI 356   2014-03-03   
414-376 3 Milwaukee Zone 5 WI MILWWI12XWX  007F BANDWIDTH.COM CLEC, LLC - WI 356   2014-04-13   
414-376 4 Milwaukee Zone 5 WI MILWWIDK6MD  5489 LEVEL 3 COMMUNICATIONS, LLC - WI 356      
414-376 5 Milwaukee Zone 5 WI MILWWIDK6MD  5489 LEVEL 3 COMMUNICATIONS, LLC - WI 356   2005-06-04   
414-376 6 Milwaukee Zone 5 WI MILWWIDK6MD  5489 LEVEL 3 COMMUNICATIONS, LLC - WI 356   2005-06-04   
414-376 7 Milwaukee Zone 5 WI MILWWI12XWX  007F BANDWIDTH.COM CLEC, LLC - WI 356   2014-11-27   
414-376 8 Milwaukee Zone 5 WI MILWWI12XWX  007F BANDWIDTH.COM CLEC, LLC - WI 356   2014-12-28   
414-376 9 Milwaukee Zone 5 WI MILWWIDK6MD  5489 LEVEL 3 COMMUNICATIONS, LLC - WI 356   2010-07-15   

Last updated: Sun, 26 Jan 2025 15:59:20 UTC

Sponsored by: Callcentric - VoIP Internet phone service

Like this site? We accept donations via PayPal.