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: 520 [Rate centres in NPA 520] [Dial plan for NPA 520]

NXX: 357

NPA-NXX BLOCK Rate Centre Region Switch OCN LATA LIR Eff date Disc date
520-357 A Hayden AZ DDVLAZNMRS1  9636 QWEST CORPORATION 668      
520-357 0 Hayden AZ TCSNAZMAVMD  3285 LEVEL 3 COMMUNICATIONS, LLC - AZ 668   2007-03-19   
520-357 1 Hayden AZ TCSNAZMAXIX  587F BANDWIDTH.COM CLEC, LLC - AZ 668   2014-08-29   
520-357 2 Hayden AZ DDVLAZNMRS1  9636 QWEST CORPORATION 668      
520-357 3 Hayden AZ TCSNAZMAXGX  722E YMAX COMMUNICATIONS CORP. - AZ 668   2008-06-01   
520-357 4 Hayden AZ TCSNAZMAVMD  3285 LEVEL 3 COMMUNICATIONS, LLC - AZ 668   2004-07-17   
520-357 5 Hayden AZ TCSNAZMAXGX  722E YMAX COMMUNICATIONS CORP. - AZ 668   2008-06-01   
520-357 6 Hayden AZ DDVLAZNMRS1  9636 QWEST CORPORATION 668      
520-357 7 Hayden AZ DDVLAZNMRS1  9636 QWEST CORPORATION 668      
520-357 8 Hayden AZ TCSNAZMAXHX  630E ONVOY, LLC - AZ 668   2010-11-23   
520-357 9 Hayden AZ TCSNAZMAXHX  630E ONVOY, LLC - AZ 668   2016-03-23   

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

Sponsored by: VoIP.ms

Like this site? We accept donations via PayPal.