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: 455

NPA-NXX BLOCK Rate Centre Region Switch OCN LATA LIR Eff date Disc date
520-455 A Nogales AZ PTGNAZELRS1  9636 QWEST CORPORATION 668      
520-455 0 Nogales AZ PTGNAZELRS1  9636 QWEST CORPORATION 668      
520-455 2 Nogales AZ TCSNAZMAX3X  6664 SPRINT SPECTRUM L.P. 668   2007-03-08   
520-455 3 Nogales AZ TCSNAZMAXHX  630E ONVOY, LLC - AZ 668   2006-01-08   
520-455 4 Nogales AZ PTGNAZELRS1  9636 QWEST CORPORATION 668      
520-455 5 Nogales AZ PTGNAZELRS1  9636 QWEST CORPORATION 668      
520-455 7 Nogales AZ TCSMAZCH1MD  6010 NEW CINGULAR WIRELESS PCS, LLC 668   2008-01-23   
520-455 8 Nogales AZ TCSMAZCH1MD  6010 NEW CINGULAR WIRELESS PCS, LLC 668   2008-01-23   
520-455 9 Nogales AZ PTGNAZELRS1  9636 QWEST CORPORATION 668      

Last updated: Tue, 04 May 2021 15:04:27 UTC

Sponsored by: FiberConX Communications Ltd.

Like this site? We accept donations via PayPal.