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-NXX BLOCK Rate Centre Region Switch LATA LIR Eff date Disc date
520-402 8 Benson AZ   668   2017-02-27   
520-766 A Willcox AZ WLCXAZACDS0  668      
520-812 8 Tucson AZ   668   2011-10-12   
928-424 A Safford AZ WLCXAZACDS0  668      
928-701 5 Globe AZ   668   2018-11-30   

Last updated: Sun, 04 Apr 2021 19:28:27 UTC

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