Local Calling Guide

Area code/prefix search

Search area code/prefix (NPA/NXX)
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Black Mesa, AZ

NPA-NXX BLOCK Switch OCN LATA LIR Eff date Disc date
928-431 A STMCAZXE6MD  6010 NEW CINGULAR WIRELESS PCS, LLC 980      
928-677 A BLMSAZXFRS0  4449 NAVAJO COMM CO INC - AZ DBA FRONTIER NAVAJO COM 980      

Last updated: Thu, 20 Nov 2025 13:34:34 UTC

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