Local Calling Guide

Area code/prefix search

Search area code/prefix (NPA/NXX)
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Switch: TCSNAZMAX3Y

NPA-NXX BLOCK Rate Centre Region OCN LATA LIR Eff date Disc date
520-367 A Tucson AZ 624H ONVOY SPECTRUM, LLC 668      
520-602 A Tucson AZ 624H ONVOY SPECTRUM, LLC 668      
520-710 A Tucson AZ 624H ONVOY SPECTRUM, LLC 668      
520-739 A Tucson AZ 624H ONVOY SPECTRUM, LLC 668   2025-01-06   

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

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