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: 478

NPA-NXX BLOCK Rate Centre Region Switch OCN LATA LIR Eff date Disc date
520-478 A Ajo AZ PHNXAZMAXYX  7217 TELEPORT COMMUNICATIONS AMERICA, LLC - AZ 666      
520-478 0 Ajo AZ PHNXAZ197MD  939H COMMIO, LLC 666   2021-11-28   
520-478 1 Ajo AZ PHNXAZ197MD  939H COMMIO, LLC 666   2021-11-28   
520-478 6 Ajo AZ PHNXAZMAXYX  7217 TELEPORT COMMUNICATIONS AMERICA, LLC - AZ 666   2020-12-11   
520-478 7 Ajo AZ PHNXAZ19CMD  516J TON80 COMMUNICATIONS, LLC 666   2021-10-02   
520-478 8 Ajo AZ PHNXAZ197MD  939H COMMIO, LLC 666   2024-03-28   
520-478 9 Ajo AZ PHNXAZMAXMD  6010 NEW CINGULAR WIRELESS PCS, LLC 666   2021-06-12   

Last updated: Sun, 26 Jan 2025 15:59:20 UTC

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