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: 579

NPA-NXX BLOCK Rate Centre Region Switch OCN LATA LIR Eff date Disc date
501-579 A Spring Lake AR   6534 NEW CINGULAR WIRELESS PCS, LLC - IL 528   2025-05-31   
501-579 9 Spring Lake AR   6534 NEW CINGULAR WIRELESS PCS, LLC - IL 528   2025-05-31   

Last updated: Fri, 25 Jul 2025 03:21:23 UTC

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