Local Calling Guide

Area code/prefix search

Search area code/prefix (NPA/NXX)
  • Effective date searches are available only for US area codes. Our sources for non-US NPA-NXX data do not provide this information.
  • If you want to search an entire area code regardless of activity, leave both the next and past days fields set to zero.

NPA: 480 [Rate centres in NPA 480] [Dial plan for NPA 480]

NXX: 923

NPA-NXX BLOCK Rate Centre Region Switch OCN LATA LIR Eff date Disc date
480-923 A Phoenix AZ   630E ONVOY, LLC - AZ 666      
480-923 0 Phoenix AZ PHNXAZ28DS3  630E ONVOY, LLC - AZ 666   2017-09-09   
480-923 2 Phoenix AZ PHNXAZ28DS3  630E ONVOY, LLC - AZ 666   2017-08-14   
480-923 3 Phoenix AZ PHNXAZ28DS3  630E ONVOY, LLC - AZ 666   2017-08-14   
480-923 4 Phoenix AZ PHNXAZ28DS3  630E ONVOY, LLC - AZ 666   2017-08-14   
480-923 5 Phoenix AZ PHNXAZ28DS3  630E ONVOY, LLC - AZ 666   2017-08-14   
480-923 6 Phoenix AZ PHNXAZ28DS3  630E ONVOY, LLC - AZ 666   2017-09-09   
480-923 7 Phoenix AZ PHNXAZ28DS3  630E ONVOY, LLC - AZ 666   2017-09-09   
480-923 8 Phoenix AZ PHNXAZ28DS3  630E ONVOY, LLC - AZ 666   2017-09-09   
480-923 9 Phoenix AZ PHNXAZ28DS3  630E ONVOY, LLC - AZ 666   2017-09-09   

Last updated: Thu, 16 Oct 2025 03:04:18 UTC

Sponsored by: ISP Telecom

Like this site? We accept donations via PayPal.