Local Calling Guide

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NPA: 928 [Rate centres in NPA 928] [Dial plan for NPA 928]

NXX: 357

NPA-NXX BLOCK Rate Centre Region Switch OCN LATA LIR Eff date Disc date
928-357 A Window Rock AZ STMCAZXEXMD  3285 LEVEL 3 COMMUNICATIONS, LLC - AZ 980      
928-357 6 Window Rock AZ STMCAZXEXMD  3285 LEVEL 3 COMMUNICATIONS, LLC - AZ 980   2019-12-30   

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

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