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: 503

NPA-NXX BLOCK Rate Centre Region Switch OCN LATA LIR Eff date Disc date
520-503 A Willcox AZ TCSNAZMAXHX  630E ONVOY, LLC - AZ 668      
520-503 0 Willcox AZ TCSNAZXGAMD  6572 CELLCO PARTNERSHIP DBA VERIZON WIRELESS - AZ 668      
520-503 1 Willcox AZ TCSNAZMAXHX  630E ONVOY, LLC - AZ 668      
520-503 2 Willcox AZ TCSNAZMAXHX  630E ONVOY, LLC - AZ 668      
520-503 3 Willcox AZ TCSNAZMAXHX  630E ONVOY, LLC - AZ 668      
520-503 4 Willcox AZ TCSNAZMAXHX  630E ONVOY, LLC - AZ 668      
520-503 5 Willcox AZ TCSNAZMAXHX  630E ONVOY, LLC - AZ 668      
520-503 6 Willcox AZ TCSMAZCH9MD  939H COMMIO, LLC 668      
520-503 7 Willcox AZ   6572 CELLCO PARTNERSHIP DBA VERIZON WIRELESS - AZ 668      
520-503 8 Willcox AZ TCSNAZXGAMD  6572 CELLCO PARTNERSHIP DBA VERIZON WIRELESS - AZ 668      
520-503 9 Willcox AZ TCSMAZCHDS0  579F PEERLESS NETWORK OF ARIZONA, LLC - AZ 668      

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

Sponsored by: LES.NET

Like this site? We accept donations via PayPal.