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: 677

NPA-NXX BLOCK Rate Centre Region Switch OCN LATA LIR Eff date Disc date
928-677 A Black Mesa AZ BLMSAZXFRS0  4449 NAVAJO COMM CO INC - AZ DBA FRONTIER NAVAJO COM 980      

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

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