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: 263

NPA-NXX BLOCK Rate Centre Region Switch OCN LATA LIR Eff date Disc date
520-263 A Sierra Vista AZ TCSNAZMAXCY  318J COMCAST IP PHONE, LLC 668      
520-263 0 Sierra Vista AZ TCSMAZCHDS0  579F PEERLESS NETWORK OF ARIZONA, LLC - AZ 668      
520-263 1 Sierra Vista AZ TCSNAZMAXHX  630E ONVOY, LLC - AZ 668      
520-263 2 Sierra Vista AZ TCSNAZMAXCY  318J COMCAST IP PHONE, LLC 668      
520-263 3 Sierra Vista AZ TCSNAZMAXCY  318J COMCAST IP PHONE, LLC 668      
520-263 4 Sierra Vista AZ TCSNAZMAXCY  318J COMCAST IP PHONE, LLC 668      
520-263 5 Sierra Vista AZ TCSNAZMAXHX  630E ONVOY, LLC - AZ 668      
520-263 6 Sierra Vista AZ TCSNAZMAXYX  508J CENTURYLINK COMMUNICATIONS, LLC 668      
520-263 7 Sierra Vista AZ TCSMAZOI3MD  6529 T-MOBILE USA, INC. 668      
520-263 8 Sierra Vista AZ TCSNAZMAXHX  630E ONVOY, LLC - AZ 668      
520-263 9 Sierra Vista AZ TCSNAZMAXHX  630E ONVOY, LLC - AZ 668      

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

Sponsored by: Callcentric - VoIP Internet phone service

Like this site? We accept donations via PayPal.