Local Calling Guide

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

NXX: 397

NPA-NXX BLOCK Rate Centre Region Switch OCN LATA LIR Eff date Disc date
928-397 A Castle Rock AZ PHNXAZ28DS3  630E ONVOY, LLC - AZ 666      
928-397 0 Castle Rock AZ PHNXAZ28DS3  630E ONVOY, LLC - AZ 666   2021-08-08   
928-397 1 Castle Rock AZ PHNZAZZJAMD  6572 CELLCO PARTNERSHIP DBA VERIZON WIRELESS - AZ 666   2024-05-21   
928-397 2 Castle Rock AZ PHNXAZMAXQY  624H ONVOY SPECTRUM, LLC 666   2021-10-21   
928-397 3 Castle Rock AZ PHNDAZ91DS5  3285 LEVEL 3 COMMUNICATIONS, LLC - AZ 666   2023-02-24   
928-397 4 Castle Rock AZ PHNZAZZJAMD  6572 CELLCO PARTNERSHIP DBA VERIZON WIRELESS - AZ 666   2024-09-25   
928-397 5 Castle Rock AZ PHNZAZZJAMD  6572 CELLCO PARTNERSHIP DBA VERIZON WIRELESS - AZ 666   2024-09-25   
928-397 6 Castle Rock AZ PHNXAZ19CMD  516J TON80 COMMUNICATIONS, LLC 666   2021-07-03   
928-397 7 Castle Rock AZ PHNXAZ28DS3  630E ONVOY, LLC - AZ 666   2021-02-20   
928-397 8 Castle Rock AZ PHNXAZ28DS3  630E ONVOY, LLC - AZ 666   2021-02-20   
928-397 9 Castle Rock AZ PHNXAZ28DS3  630E ONVOY, LLC - AZ 666   2021-07-03   

Last updated: Wed, 18 Jun 2025 02:30:00 UTC

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