Local Calling Guide

Area code/prefix search

Search area code/prefix (NPA/NXX)
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NPA: 928 [Rate centres in NPA 928] [Dial plan for NPA 928]

NXX: 557

NPA-NXX BLOCK Rate Centre Region Switch OCN LATA LIR Eff date Disc date
928-557 A Safford AZ   6010 NEW CINGULAR WIRELESS PCS, LLC 668   2026-03-13   
928-557 9 Safford AZ   6010 NEW CINGULAR WIRELESS PCS, LLC 668   2026-03-13   

Last updated: Thu, 29 Jan 2026 14:35:03 UTC

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