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: 510

NPA-NXX BLOCK Rate Centre Region Switch OCN LATA LIR Eff date Disc date
520-510 A Casa Grande AZ PHNXAZMACM6  6010 NEW CINGULAR WIRELESS PCS, LLC 666      
520-510 0 Casa Grande AZ PHNXAZ19DS3  579F PEERLESS NETWORK OF ARIZONA, LLC - AZ 666      
520-510 1 Casa Grande AZ PHNXAZMACM6  6010 NEW CINGULAR WIRELESS PCS, LLC 666      
520-510 2 Casa Grande AZ PHNXAZMACM6  6010 NEW CINGULAR WIRELESS PCS, LLC 666      
520-510 3 Casa Grande AZ PHNXAZMACM6  6010 NEW CINGULAR WIRELESS PCS, LLC 666      
520-510 4 Casa Grande AZ TEMPAZNR7MD  5562 METROPCS, INC. 666      
520-510 5 Casa Grande AZ PHNZAZZJAMD  6572 CELLCO PARTNERSHIP DBA VERIZON WIRELESS - AZ 666      
520-510 6 Casa Grande AZ PHNXAZMACM6  6010 NEW CINGULAR WIRELESS PCS, LLC 666      
520-510 7 Casa Grande AZ PHNXAZMACM6  6010 NEW CINGULAR WIRELESS PCS, LLC 666      
520-510 8 Casa Grande AZ PHNXAZMACM6  6010 NEW CINGULAR WIRELESS PCS, LLC 666      
520-510 9 Casa Grande AZ PHNXAZMACM6  6010 NEW CINGULAR WIRELESS PCS, LLC 666      

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.