Local Calling Guide

Area code/prefix search

Search area code/prefix (NPA/NXX)
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NPA: 501 [Rate centres in NPA 501] [Dial plan for NPA 501]

NXX: 821

NPA-NXX BLOCK Rate Centre Region Switch OCN LATA LIR Eff date Disc date
501-821 A Ferndale AR LTRKARVARS1  9533 SOUTHWESTERN BELL 528      

Last updated: Sun, 27 Apr 2025 12:48:38 UTC

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