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

NXX: 457

NPA-NXX BLOCK Rate Centre Region Switch OCN LATA LIR Eff date Disc date
520-457 A Tombstone AZ TMBSAZMARS1  9636 QWEST CORPORATION 668      
520-457 0 Tombstone AZ TCSNAZMAXHX  630E ONVOY, LLC - AZ 668   2012-05-22   
520-457 1 Tombstone AZ TMBSAZMARS1  9636 QWEST CORPORATION 668      
520-457 2 Tombstone AZ TMBSAZMARS1  9636 QWEST CORPORATION 668      
520-457 3 Tombstone AZ TMBSAZMARS1  9636 QWEST CORPORATION 668      
520-457 4 Tombstone AZ TCSNAZMAXKX  7217 TELEPORT COMMUNICATIONS AMERICA, LLC - AZ 668   2012-07-12   
520-457 5 Tombstone AZ TCSNAZMAXHX  630E ONVOY, LLC - AZ 668   2004-12-19   
520-457 6 Tombstone AZ TCSNAZMAXHX  630E ONVOY, LLC - AZ 668   2017-06-22   
520-457 7 Tombstone AZ TCSNAZMAXHX  630E ONVOY, LLC - AZ 668   2007-05-26   
520-457 8 Tombstone AZ TCSNAZ75CM0  6572 CELLCO PARTNERSHIP DBA VERIZON WIRELESS - AZ 668   2011-05-22   
520-457 9 Tombstone AZ TMBSAZMARS1  9636 QWEST CORPORATION 668      

Last updated: Tue, 04 May 2021 15:04:27 UTC

Sponsored by: Execulink Telecom

Like this site? We accept donations via PayPal.