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: 680

NPA-NXX BLOCK Rate Centre Region Switch OCN LATA LIR Eff date Disc date
520-680 A Bisbee AZ TCSNAZMAXHX  630E ONVOY, LLC - AZ 668      
520-680 0 Bisbee AZ TCSNAZMAX6Y  073H TELNYX LLC 668   2023-09-09   
520-680 3 Bisbee AZ TCSNAZMAXHX  630E ONVOY, LLC - AZ 668   2023-08-26   
520-680 9 Bisbee AZ TCSMAZCHDS0  579F PEERLESS NETWORK OF ARIZONA, LLC - AZ 668   2023-10-21   

Last updated: Tue, 16 Apr 2024 01:38:01 UTC

Sponsored by: Callcentric - VoIP Internet phone service

Like this site? We accept donations via PayPal.