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: TCSNAZSODS0

NPA-NXX BLOCK Rate Centre Region OCN LATA LIR Eff date Disc date
520-243 A Tucson AZ 9636 QWEST CORPORATION 668      
520-294 A Tucson AZ 9636 QWEST CORPORATION 668      
520-295 A Tucson AZ 9636 QWEST CORPORATION 668      
520-434 A Tucson AZ 9636 QWEST CORPORATION 668      
520-573 A Tucson AZ 9636 QWEST CORPORATION 668      
520-741 A Tucson AZ 9636 QWEST CORPORATION 668      
520-746 A Tucson AZ 9636 QWEST CORPORATION 668      
520-794 A Tucson AZ 9636 QWEST CORPORATION 668      
520-799 A Tucson AZ 9636 QWEST CORPORATION 668      
520-806 A Tucson AZ 9636 QWEST CORPORATION 668      
520-807 A Tucson AZ 9636 QWEST CORPORATION 668      
520-889 A Tucson AZ 9636 QWEST CORPORATION 668      

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

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