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: 685

NPA-NXX BLOCK Rate Centre Region Switch OCN LATA LIR Eff date Disc date
520-685 A Sierra Vista AZ TCSNAZMAXCY  318J COMCAST IP PHONE, LLC 668      
520-685 0 Sierra Vista AZ TCSMAZOI3MD  5562 METROPCS, INC. 668   2017-10-05   
520-685 1 Sierra Vista AZ TCSNAZMAXHX  630E ONVOY, LLC - AZ 668   2018-01-18   
520-685 2 Sierra Vista AZ TCSNAZMAXCY  318J COMCAST IP PHONE, LLC 668   2017-07-25   
520-685 3 Sierra Vista AZ TCSNAZMAXCY  318J COMCAST IP PHONE, LLC 668   2017-10-21   
520-685 4 Sierra Vista AZ TCSNAZXGDS0  7465 MCIMETRO ACCESS TRANSMISSION SERVICES LLC - AZ 668   2017-08-04   
520-685 5 Sierra Vista AZ TCSNAZMAXCY  318J COMCAST IP PHONE, LLC 668   2017-08-26   
520-685 6 Sierra Vista AZ TCSNAZMAXCY  318J COMCAST IP PHONE, LLC 668   2017-10-13   
520-685 7 Sierra Vista AZ TCSNAZMAXHX  630E ONVOY, LLC - AZ 668   2018-01-18   
520-685 8 Sierra Vista AZ TCSNAZMAXCY  318J COMCAST IP PHONE, LLC 668   2019-02-11   
520-685 9 Sierra Vista AZ TCSNAZMAXCY  318J COMCAST IP PHONE, LLC 668   2019-01-30   

Last updated: Thu, 16 Oct 2025 03:04:18 UTC

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