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: 644

NPA-NXX BLOCK Rate Centre Region Switch OCN LATA LIR Eff date Disc date
520-644 A Komatke AZ PHNXAZ19AMD  965H FRACTEL, LLC 666      
520-644 4 Komatke AZ PHNXAZ19AMD  965H FRACTEL, LLC 666   2020-11-22   
520-644 6 Komatke AZ   145J TERRA NOVA TELECOM INC. 666   2025-08-31   

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

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