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: 520 [Rate centres in NPA 520] [Dial plan for NPA 520]

NXX: 580

NPA-NXX BLOCK Rate Centre Region Switch OCN LATA LIR Eff date Disc date
520-580 A Superior AZ PHNXAZMAXQY  624H ONVOY SPECTRUM, LLC 666      
520-580 0 Superior AZ PHNXAZ28DS3  630E ONVOY, LLC - AZ 666   2021-08-29   
520-580 1 Superior AZ   515J IP HORIZON LLC 666   2021-10-01   
520-580 2 Superior AZ PHNXAZ28DS3  630E ONVOY, LLC - AZ 666   2021-10-28   
520-580 3 Superior AZ PHNXAZMAXQY  624H ONVOY SPECTRUM, LLC 666   2021-11-01   
520-580 4 Superior AZ PHNXAZMAXQY  624H ONVOY SPECTRUM, LLC 666   2021-11-01   
520-580 5 Superior AZ PHNXAZMAXQY  624H ONVOY SPECTRUM, LLC 666   2021-08-28   
520-580 6 Superior AZ PHNXAZMAXQY  624H ONVOY SPECTRUM, LLC 666   2021-11-01   
520-580 7 Superior AZ PHNXAZMAXQY  624H ONVOY SPECTRUM, LLC 666   2021-11-01   
520-580 8 Superior AZ PHNXAZMAXQY  624H ONVOY SPECTRUM, LLC 666   2021-10-21   
520-580 9 Superior AZ PHNXAZ28DS3  630E ONVOY, LLC - AZ 666   2021-10-21   

Last updated: Sun, 26 Jan 2025 15:59:20 UTC

Sponsored by: BeeVox - Whitelabel Reseller Platform

Like this site? We accept donations via PayPal.