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: 315

NPA-NXX BLOCK Rate Centre Region Switch OCN LATA LIR Eff date Disc date
520-315 A Casa Blanca AZ LNBTAZXCDS1  2179 GILA RIVER TELECOMM, INC. 666      

Last updated: Sun, 07 Dec 2025 22:02:11 UTC

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