Local Calling Guide

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Marmaduke, AR

NPA-NXX BLOCK Switch OCN LATA LIR Eff date Disc date
870-597 A MRMDARXARS0  1144 BRIGHTSPEED OF CENTRAL ARKANSAS, LLC 528      
870-597 0   1144 BRIGHTSPEED OF CENTRAL ARKANSAS, LLC 528      
870-597 1   1144 BRIGHTSPEED OF CENTRAL ARKANSAS, LLC 528      
870-597 2   1144 BRIGHTSPEED OF CENTRAL ARKANSAS, LLC 528      
870-597 3   348F ONVOY, LLC - AR 528   2022-12-12   
870-597 4   1144 BRIGHTSPEED OF CENTRAL ARKANSAS, LLC 528      
870-597 5   5179 LEVEL 3 COMMUNICATIONS, LLC - AR 528   2017-10-15   
870-597 6   1144 BRIGHTSPEED OF CENTRAL ARKANSAS, LLC 528      
870-597 7   624H ONVOY SPECTRUM, LLC 528   2025-02-10   
870-597 8   1144 BRIGHTSPEED OF CENTRAL ARKANSAS, LLC 528      
870-597 9   1144 BRIGHTSPEED OF CENTRAL ARKANSAS, LLC 528      

Last updated: Thu, 01 Jan 2026 03:59:49 UTC

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