Local Calling Guide

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

NXX: 507

NPA-NXX BLOCK Rate Centre Region Switch OCN LATA LIR Eff date Disc date
928-507 A Marble Canyon AZ PHNXAZ28DS3  630E ONVOY, LLC - AZ 666      
928-507 3 Marble Canyon AZ PHNXAZ28DS3  630E ONVOY, LLC - AZ 666   2023-08-28   

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

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