Local Calling Guide

Area code/prefix search

Search area code/prefix (NPA/NXX)
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NPA: 520 [Rate centres in NPA 520] [Dial plan for NPA 520]

NXX: 504

NPA-NXX BLOCK Rate Centre Region Switch OCN LATA LIR Eff date Disc date
520-504 A Sierra Vista AZ TCSMAZOI3MD  6529 T-MOBILE USA, INC. 668      
520-504 0 Sierra Vista AZ TCSNAZMAXHX  630E ONVOY, LLC - AZ 668   2021-08-08   
520-504 1 Sierra Vista AZ TCSNAZMAXHX  630E ONVOY, LLC - AZ 668   2021-08-08   
520-504 2 Sierra Vista AZ TCSNAZMAX3Y  624H ONVOY SPECTRUM, LLC 668   2021-07-25   
520-504 3 Sierra Vista AZ TCSNAZMAXHX  630E ONVOY, LLC - AZ 668   2021-06-07   
520-504 4 Sierra Vista AZ TCSNAZMAXHX  630E ONVOY, LLC - AZ 668   2021-06-07   
520-504 5 Sierra Vista AZ TCSNAZMAXHX  630E ONVOY, LLC - AZ 668   2021-06-07   
520-504 6 Sierra Vista AZ TCSNAZMAXHX  630E ONVOY, LLC - AZ 668   2021-06-07   
520-504 7 Sierra Vista AZ TCSMAZCH1MD  6010 NEW CINGULAR WIRELESS PCS, LLC 668   2021-06-07   
520-504 8 Sierra Vista AZ TCSMAZOI3MD  6529 T-MOBILE USA, INC. 668   2021-06-06   
520-504 9 Sierra Vista AZ TCSMAZOI3MD  6529 T-MOBILE USA, INC. 668   2021-06-06   

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

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