Local Calling Guide

Area code/prefix search

Search area code/prefix (NPA/NXX)
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Gillham, AR

NPA-NXX BLOCK Switch OCN LATA LIR Eff date Disc date
870-386 A GLHMARXARS0  1691 WINDSTREAM ARKANSAS, INC. 528      
870-478 A LTRKARWTBMD  5179 LEVEL 3 COMMUNICATIONS, LLC - AR 528      
870-478 0   624H ONVOY SPECTRUM, LLC 528   2025-01-07   
870-478 4   348F ONVOY, LLC - AR 528   2021-06-25   
870-478 7   5179 LEVEL 3 COMMUNICATIONS, LLC - AR 528   2015-04-05   

Last updated: Tue, 13 Jan 2026 21:50:02 UTC

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