Local Calling Guide

Area code/prefix search

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

NPA-NXX BLOCK Rate Centre Region OCN LATA LIR Eff date Disc date
520-367 1 Tucson AZ 551G NUSO, LLC 668   2018-04-14   
520-484 A Tucson AZ 551G NUSO, LLC 668      
520-484 1 Tucson AZ 551G NUSO, LLC 668   2012-12-20   

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

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