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.

Switch: TCSNAZMAXIX

NPA-NXX BLOCK Rate Centre Region OCN LATA LIR Eff date Disc date
520-261 A Tucson AZ 587F BANDWIDTH.COM CLEC, LLC - AZ 668      
520-276 A Tucson AZ 587F BANDWIDTH.COM CLEC, LLC - AZ 668      
520-355 A Tucson AZ 587F BANDWIDTH.COM CLEC, LLC - AZ 668      
520-442 A Benson AZ 587F BANDWIDTH.COM CLEC, LLC - AZ 668      
520-485 A Tucson AZ 587F BANDWIDTH.COM CLEC, LLC - AZ 668      
520-497 A Tucson AZ 587F BANDWIDTH.COM CLEC, LLC - AZ 668      
520-540 A Tucson AZ 587F BANDWIDTH.COM CLEC, LLC - AZ 668      
520-605 A Tucson AZ 587F BANDWIDTH.COM CLEC, LLC - AZ 668      
520-612 A Tucson AZ 587F BANDWIDTH.COM CLEC, LLC - AZ 668      
520-653 A Tucson AZ 587F BANDWIDTH.COM CLEC, LLC - AZ 668      
520-657 A Hayden AZ 587F BANDWIDTH.COM CLEC, LLC - AZ 668      
520-719 A Tucson AZ 587F BANDWIDTH.COM CLEC, LLC - AZ 668      
520-775 A Tucson AZ 587F BANDWIDTH.COM CLEC, LLC - AZ 668      
520-779 A Willcox AZ 587F BANDWIDTH.COM CLEC, LLC - AZ 668      
520-812 A Tucson AZ 587F BANDWIDTH.COM CLEC, LLC - AZ 668   2025-01-19   
520-815 A Tucson AZ 587F BANDWIDTH.COM CLEC, LLC - AZ 668      
928-228 A Pima AZ 587F BANDWIDTH.COM CLEC, LLC - AZ 668      
928-361 A Pima AZ 587F BANDWIDTH.COM CLEC, LLC - AZ 668      
928-491 A Globe AZ 587F BANDWIDTH.COM CLEC, LLC - AZ 668      
928-985 A Safford AZ 587F BANDWIDTH.COM CLEC, LLC - AZ 668      

Last updated: Tue, 13 Jan 2026 21:50:02 UTC

Sponsored by: ISP Telecom

Like this site? We accept donations via PayPal.