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:

NPA-NXX BLOCK Rate Centre Region Switch OCN LATA LIR Eff date Disc date
520-803 A Sierra Vista AZ SRVSAZSODS0  9636 QWEST CORPORATION 668      

Last updated: Wed, 10 Apr 2019 01:22:05 UTC

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