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: 521

NPA-NXX BLOCK Rate Centre Region Switch OCN LATA LIR Eff date Disc date
520-521 A San Manuel AZ TCSMAZCHGMD  321J HD CARRIER LLC 668      
520-521 0 San Manuel AZ TCSMAZCHDS0  579F PEERLESS NETWORK OF ARIZONA, LLC - AZ 668      
520-521 1 San Manuel AZ TCSNAZMAX6Y  073H TELNYX LLC 668      
520-521 2 San Manuel AZ TCSNAZMAXHX  630E ONVOY, LLC - AZ 668      
520-521 3 San Manuel AZ TCSNAZMAXHX  630E ONVOY, LLC - AZ 668      
520-521 4 San Manuel AZ TCSNAZMAXIX  587F BANDWIDTH.COM CLEC, LLC - AZ 668      
520-521 6 San Manuel AZ TCSNAZMAX3Y  624H ONVOY SPECTRUM, LLC 668      
520-521 7 San Manuel AZ TCSMAZCHDS0  579F PEERLESS NETWORK OF ARIZONA, LLC - AZ 668      
520-521 8 San Manuel AZ TCSMAZCHDS0  579F PEERLESS NETWORK OF ARIZONA, LLC - AZ 668      
520-521 9 San Manuel AZ TCSMAZCHGMD  321J HD CARRIER LLC 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.