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: 320

NPA-NXX BLOCK Rate Centre Region Switch OCN LATA LIR Eff date Disc date
928-320 A Pima AZ TCSNAZXGAMD  6572 CELLCO PARTNERSHIP DBA VERIZON WIRELESS - AZ 668      
928-320 0 Pima AZ   6572 CELLCO PARTNERSHIP DBA VERIZON WIRELESS - AZ 668   2022-07-16   
928-320 1 Pima AZ   6572 CELLCO PARTNERSHIP DBA VERIZON WIRELESS - AZ 668   2023-03-31   
928-320 2 Pima AZ   630E ONVOY, LLC - AZ 668   2022-08-15   
928-320 3 Pima AZ   630E ONVOY, LLC - AZ 668   2022-09-29   
928-320 4 Pima AZ   630E ONVOY, LLC - AZ 668   2022-09-29   
928-320 5 Pima AZ   587F BANDWIDTH.COM CLEC, LLC - AZ 668   2022-11-07   
928-320 6 Pima AZ   630E ONVOY, LLC - AZ 668   2023-01-12   
928-320 7 Pima AZ   630E ONVOY, LLC - AZ 668   2022-11-10   
928-320 8 Pima AZ   939H COMMIO, LLC 668   2022-07-28   
928-320 9 Pima AZ   630E ONVOY, LLC - AZ 668   2022-11-10   

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

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