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: 638

NPA-NXX BLOCK Rate Centre Region Switch OCN LATA LIR Eff date Disc date
501-638 A Little Rock AR LTRKARWTBMD  5179 LEVEL 3 COMMUNICATIONS, LLC - AR 528      
501-638 8 Little Rock AR LTRKARWTBMD  5179 LEVEL 3 COMMUNICATIONS, LLC - AR 528   2003-10-10   

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

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