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: GNVYAZMADS0

NPA-NXX BLOCK Rate Centre Region OCN LATA LIR Eff date Disc date
520-393 A Tucson AZ 9636 QWEST CORPORATION 668      
520-393 0 Tucson AZ 9636 QWEST CORPORATION 668      
520-393 1 Tucson AZ 9636 QWEST CORPORATION 668      
520-393 2 Tucson AZ 9636 QWEST CORPORATION 668      
520-393 4 Tucson AZ 9636 QWEST CORPORATION 668      
520-393 5 Tucson AZ 9636 QWEST CORPORATION 668      
520-393 6 Tucson AZ 9636 QWEST CORPORATION 668      
520-393 7 Tucson AZ 9636 QWEST CORPORATION 668      
520-399 A Tucson AZ 9636 QWEST CORPORATION 668      
520-399 0 Tucson AZ 9636 QWEST CORPORATION 668      
520-399 1 Tucson AZ 9636 QWEST CORPORATION 668      
520-399 2 Tucson AZ 9636 QWEST CORPORATION 668      
520-399 3 Tucson AZ 9636 QWEST CORPORATION 668      
520-399 4 Tucson AZ 9636 QWEST CORPORATION 668      
520-399 9 Tucson AZ 9636 QWEST CORPORATION 668      
520-625 A Tucson AZ 9636 QWEST CORPORATION 668      
520-648 A Tucson AZ 9636 QWEST CORPORATION 668      

Last updated: Tue, 16 Apr 2024 01:38:01 UTC

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