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: 730

NPA-NXX BLOCK Rate Centre Region Switch OCN LATA LIR Eff date Disc date
928-730 A Fort Defiance AZ   6010 NEW CINGULAR WIRELESS PCS, LLC 980      
928-730 3 Fort Defiance AZ STMCAZXEXMD  3285 LEVEL 3 COMMUNICATIONS, LLC - AZ 980   2020-03-27   
928-730 5 Fort Defiance AZ STMCAZXE6MD  6010 NEW CINGULAR WIRELESS PCS, LLC 980   2023-10-17   
928-730 6 Fort Defiance AZ STMCAZXE6MD  6010 NEW CINGULAR WIRELESS PCS, LLC 980   2023-10-17   
928-730 7 Fort Defiance AZ STMCAZXE7MD  073H TELNYX LLC 980   2022-07-29   
928-730 8 Fort Defiance AZ STMCAZXE6MD  6010 NEW CINGULAR WIRELESS PCS, LLC 980   2021-10-22   

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

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