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: DGLSAZMARS1

NPA-NXX BLOCK Rate Centre Region OCN LATA LIR Eff date Disc date
520-364 A Douglas AZ 9636 QWEST CORPORATION 668      
520-368 A Douglas AZ 9636 QWEST CORPORATION 668      
520-805 A Douglas AZ 9636 QWEST CORPORATION 668      
520-805 0 Douglas AZ 9636 QWEST CORPORATION 668      
520-805 1 Douglas AZ 9636 QWEST CORPORATION 668      
520-805 2 Douglas AZ 9636 QWEST CORPORATION 668      
520-805 3 Douglas AZ 9636 QWEST CORPORATION 668      
520-805 4 Douglas AZ 9636 QWEST CORPORATION 668      
520-805 5 Douglas AZ 9636 QWEST CORPORATION 668      
520-805 6 Douglas AZ 9636 QWEST CORPORATION 668      
520-805 8 Douglas AZ 9636 QWEST CORPORATION 668      
520-805 9 Douglas AZ 9636 QWEST CORPORATION 668      

Last updated: Thu, 16 Jul 2026 02:21:55 UTC

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