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.
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NPA: 520 [Rate centres in NPA 520] [Dial plan for NPA 520]

NXX: 454

NPA-NXX BLOCK Rate Centre Region Switch OCN LATA LIR Eff date Disc date
520-454 A Sierra Vista AZ SRVSAZMADS0  9636 QWEST CORPORATION 668      
520-454 0 Sierra Vista AZ   9636 QWEST CORPORATION 668      
520-454 1 Sierra Vista AZ   9636 QWEST CORPORATION 668      
520-454 2 Sierra Vista AZ   9636 QWEST CORPORATION 668      
520-454 3 Sierra Vista AZ   9636 QWEST CORPORATION 668      
520-454 4 Sierra Vista AZ   9636 QWEST CORPORATION 668      
520-454 5 Sierra Vista AZ   9636 QWEST CORPORATION 668      
520-454 6 Sierra Vista AZ   9636 QWEST CORPORATION 668      
520-454 7 Sierra Vista AZ   9636 QWEST CORPORATION 668      
520-454 8 Sierra Vista AZ   9636 QWEST CORPORATION 668      
520-454 9 Sierra Vista AZ   9636 QWEST CORPORATION 668      

Last updated: Wed, 20 Nov 2024 21:20:06 UTC

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