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: 436

NPA-NXX BLOCK Rate Centre Region Switch OCN LATA LIR Eff date Disc date
520-436 A Hayden AZ TCSNAZMAXHX  630E ONVOY, LLC - AZ 668      
520-436 0 Hayden AZ TCSMAZCH7MD  073H TELNYX LLC 668      
520-436 1 Hayden AZ TCSMAZCHDS0  579F PEERLESS NETWORK OF ARIZONA, LLC - AZ 668      
520-436 2 Hayden AZ TCSNAZMAXHX  630E ONVOY, LLC - AZ 668      
520-436 3 Hayden AZ TCSNAZMAXHX  630E ONVOY, LLC - AZ 668      
520-436 4 Hayden AZ TCSNAZMAXHX  630E ONVOY, LLC - AZ 668      
520-436 5 Hayden AZ TCSNAZMAXHX  630E ONVOY, LLC - AZ 668      
520-436 6 Hayden AZ TCSNAZMAXKX  7217 TELEPORT COMMUNICATIONS AMERICA, LLC - AZ 668      
520-436 7 Hayden AZ TCSNAZMAXHX  630E ONVOY, LLC - AZ 668      
520-436 8 Hayden AZ TCSNAZMAXHX  630E ONVOY, LLC - AZ 668      
520-436 9 Hayden AZ TCSNAZMAXHX  630E ONVOY, LLC - AZ 668      

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

Sponsored by: FiberConX Communications Ltd.

Like this site? We accept donations via PayPal.