Local Calling Guide

Area code/prefix search

Search area code/prefix (NPA/NXX)
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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   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   630E ONVOY, LLC - AZ 666   2021-10-28   
520-580 3 Superior AZ   624H ONVOY SPECTRUM, LLC 666   2021-11-01   
520-580 4 Superior AZ   624H ONVOY SPECTRUM, LLC 666   2021-11-01   
520-580 5 Superior AZ   624H ONVOY SPECTRUM, LLC 666   2021-08-28   
520-580 6 Superior AZ   624H ONVOY SPECTRUM, LLC 666   2021-11-01   
520-580 7 Superior AZ   624H ONVOY SPECTRUM, LLC 666   2021-11-01   
520-580 8 Superior AZ   624H ONVOY SPECTRUM, LLC 666   2021-10-21   
520-580 9 Superior AZ   630E ONVOY, LLC - AZ 666   2021-10-21   

Last updated: Tue, 13 Jan 2026 21:50:02 UTC

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