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: 949

NPA-NXX BLOCK Rate Centre Region Switch OCN LATA LIR Eff date Disc date
520-949 A Santa Rosa AZ TCSMAZCHFMD  516J TON80 COMMUNICATIONS, LLC 668      
520-949 4 Santa Rosa AZ TCSMAZCHFMD  516J TON80 COMMUNICATIONS, LLC 668   2022-03-17   
520-949 9 Santa Rosa AZ   145J TERRA NOVA TELECOM INC. 668   2025-07-27   

Last updated: Thu, 20 Nov 2025 13:34:34 UTC

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