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: 614

NPA-NXX BLOCK Rate Centre Region Switch OCN LATA LIR Eff date Disc date
520-614 A Tucson AZ TCSNAZMAXHX  630E ONVOY, LLC - AZ 668      
520-614 0 Tucson AZ TCSNAZMAXHX  630E ONVOY, LLC - AZ 668   2022-05-05   
520-614 1 Tucson AZ TCSNAZMAXHX  630E ONVOY, LLC - AZ 668   2022-05-05   
520-614 2 Tucson AZ TCSNAZMAXHX  630E ONVOY, LLC - AZ 668   2022-04-25   
520-614 3 Tucson AZ TCSNAZMAXHX  630E ONVOY, LLC - AZ 668   2022-04-25   
520-614 4 Tucson AZ TCSNAZMAXHX  630E ONVOY, LLC - AZ 668   2022-04-25   
520-614 5 Tucson AZ TCSNAZMAXHX  630E ONVOY, LLC - AZ 668   2022-04-25   
520-614 6 Tucson AZ TCSNAZMAVMD  3285 LEVEL 3 COMMUNICATIONS, LLC - AZ 668   2022-04-26   
520-614 7 Tucson AZ TCSNAZMAXHX  630E ONVOY, LLC - AZ 668   2022-04-25   
520-614 8 Tucson AZ TCSNAZMAXHX  630E ONVOY, LLC - AZ 668   2022-04-25   
520-614 9 Tucson AZ TCSMAZCHDS0  579F PEERLESS NETWORK OF ARIZONA, LLC - AZ 668   2022-04-26   

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

Sponsored by: FiberConX Communications Ltd.

Like this site? We accept donations via PayPal.