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: 370

NPA-NXX BLOCK Rate Centre Region Switch OCN LATA LIR Eff date Disc date
928-370 A Marble Canyon AZ PHNXAZ28DS3  630E ONVOY, LLC - AZ 666      
928-370 0 Marble Canyon AZ   630E ONVOY, LLC - AZ 666   2021-01-16   
928-370 1 Marble Canyon AZ   630E ONVOY, LLC - AZ 666   2021-01-16   
928-370 2 Marble Canyon AZ   630E ONVOY, LLC - AZ 666   2021-01-16   
928-370 3 Marble Canyon AZ   630E ONVOY, LLC - AZ 666   2020-08-13   
928-370 4 Marble Canyon AZ   630E ONVOY, LLC - AZ 666   2021-01-16   
928-370 5 Marble Canyon AZ   630E ONVOY, LLC - AZ 666   2021-07-05   
928-370 6 Marble Canyon AZ   630E ONVOY, LLC - AZ 666   2021-08-08   
928-370 7 Marble Canyon AZ   630E ONVOY, LLC - AZ 666   2020-11-24   
928-370 8 Marble Canyon AZ   630E ONVOY, LLC - AZ 666   2022-09-11   
928-370 9 Marble Canyon AZ   6010 NEW CINGULAR WIRELESS PCS, LLC 666   2021-03-06   

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

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