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: 523

NPA-NXX BLOCK Rate Centre Region Switch OCN LATA LIR Eff date Disc date
520-523 A Sierra Vista AZ TCSNAZMAXHX  630E ONVOY, LLC - AZ 668      
520-523 0 Sierra Vista AZ TCSMAZOI4MD  5562 METROPCS, INC. 668   2020-08-07   
520-523 1 Sierra Vista AZ TCSNAZMAX6Y  073H TELNYX LLC 668   2020-11-21   
520-523 2 Sierra Vista AZ TCSNAZMAXHX  630E ONVOY, LLC - AZ 668   2020-07-09   
520-523 3 Sierra Vista AZ TCSNAZMAXHX  630E ONVOY, LLC - AZ 668   2020-07-09   
520-523 4 Sierra Vista AZ TCSNAZMAXHX  630E ONVOY, LLC - AZ 668   2020-11-14   
520-523 5 Sierra Vista AZ TCSNAZMAXHX  630E ONVOY, LLC - AZ 668   2020-10-10   
520-523 6 Sierra Vista AZ TCSNAZMAXHX  630E ONVOY, LLC - AZ 668   2020-10-10   
520-523 7 Sierra Vista AZ TCSNAZMAXHX  630E ONVOY, LLC - AZ 668   2020-11-14   
520-523 8 Sierra Vista AZ TCSNAZMAXHX  630E ONVOY, LLC - AZ 668   2020-11-14   
520-523 9 Sierra Vista AZ TCSMAZOI3MD  6529 T-MOBILE USA, INC. 668   2020-09-18   

Last updated: Wed, 07 Feb 2024 04:12:25 UTC

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