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: 210

NPA-NXX BLOCK Rate Centre Region Switch OCN LATA LIR Eff date Disc date
520-210 A Tombstone AZ TCSNAZMAXHX  630E ONVOY, LLC - AZ 668      
520-210 0 Tombstone AZ TCSMAZCHDS0  579F PEERLESS NETWORK OF ARIZONA, LLC - AZ 668   2014-10-12   
520-210 1 Tombstone AZ TCSNAZ75CM0  6572 CELLCO PARTNERSHIP DBA VERIZON WIRELESS - AZ 668   2014-10-25   
520-210 2 Tombstone AZ TCSNAZ75CM0  6572 CELLCO PARTNERSHIP DBA VERIZON WIRELESS - AZ 668   2015-02-15   
520-210 3 Tombstone AZ TCSNAZMAXHX  630E ONVOY, LLC - AZ 668   2016-04-06   
520-210 4 Tombstone AZ TCSNAZMAXHX  630E ONVOY, LLC - AZ 668   2016-04-06   
520-210 5 Tombstone AZ TCSNAZMAXHX  630E ONVOY, LLC - AZ 668   2019-05-10   
520-210 6 Tombstone AZ TCSNAZMAXYX  7575 CENTURYLINK COMMUNICATIONS LLC 668   2016-01-14   
520-210 7 Tombstone AZ TCSNAZMAXHX  630E ONVOY, LLC - AZ 668   2013-10-19   
520-210 8 Tombstone AZ TCSNAZMAXHX  630E ONVOY, LLC - AZ 668   2013-12-06   
520-210 9 Tombstone AZ TCSNAZMAXHX  630E ONVOY, LLC - AZ 668   2013-12-06   

Last updated: Tue, 04 May 2021 15:04:27 UTC

Sponsored by: FiberConX Communications Ltd.

Like this site? We accept donations via PayPal.