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: 422

NPA-NXX BLOCK Rate Centre Region Switch OCN LATA LIR Eff date Disc date
520-422 A Bisbee AZ TCSNAZMAXSX  7421 AT&T - LOCAL 668      
520-422 0 Bisbee AZ TCSNAZMAXHX  630E ONVOY, LLC - AZ 668      
520-422 1 Bisbee AZ TCSMAZCH7MD  073H TELNYX LLC 668      
520-422 2 Bisbee AZ TCSNAZMAVMD  3285 LEVEL 3 COMMUNICATIONS, LLC - AZ 668      
520-422 3 Bisbee AZ TCSNAZMAXYX  508J CENTURYLINK COMMUNICATIONS, LLC 668      
520-422 4 Bisbee AZ TCSNAZMAXHX  630E ONVOY, LLC - AZ 668      
520-422 5 Bisbee AZ TCSNAZMAXHX  630E ONVOY, LLC - AZ 668      
520-422 6 Bisbee AZ TCSNAZMAXHX  630E ONVOY, LLC - AZ 668      
520-422 7 Bisbee AZ TCSNAZMAXHX  630E ONVOY, LLC - AZ 668      
520-422 8 Bisbee AZ TCSNAZMAXHX  630E ONVOY, LLC - AZ 668      
520-422 9 Bisbee AZ TCSNAZMAXSX  7421 AT&T - LOCAL 668      

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

Sponsored by: VoIP Much Phone Company

Like this site? We accept donations via PayPal.