Local Calling Guide

Area code/prefix search

Search area code/prefix (NPA/NXX)
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Ajo, AZ

NPA-NXX BLOCK Switch OCN LATA LIR Eff date Disc date
520-387 A AJO AZXCDS0  3334 TABLE TOP TELEPHONE COMPANY 666      
520-478 A PHNXAZMAXYX  7217 TELEPORT COMMUNICATIONS AMERICA, LLC - AZ 666      
520-478 0   939H COMMIO, LLC 666   2021-11-28   
520-478 1   939H COMMIO, LLC 666   2021-11-28   
520-478 6   7217 TELEPORT COMMUNICATIONS AMERICA, LLC - AZ 666   2020-12-11   
520-478 7   516J TON80 COMMUNICATIONS, LLC 666   2021-10-02   
520-478 8   939H COMMIO, LLC 666   2024-03-28   
520-478 9   6010 NEW CINGULAR WIRELESS PCS, LLC 666   2021-06-12   

Last updated: Tue, 13 Jan 2026 21:50:02 UTC

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