Local Calling Guide

Area code/prefix search

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

NPA-NXX BLOCK Switch OCN LATA LIR Eff date Disc date
870-354 A GLWDARXA4MD  624H ONVOY SPECTRUM, LLC 528      
870-354 0   624H ONVOY SPECTRUM, LLC 528   2024-07-02   
870-354 2   5179 LEVEL 3 COMMUNICATIONS, LLC - AR 528   2017-10-28   
870-354 3   348F ONVOY, LLC - AR 528   2021-12-02   
870-354 5   348F ONVOY, LLC - AR 528   2021-06-26   
870-354 9   624H ONVOY SPECTRUM, LLC 528   2021-12-18   
870-583 A UMPRARXARS0  1691 WINDSTREAM ARKANSAS, INC. 528      
870-583 0   1691 WINDSTREAM ARKANSAS, INC. 528      
870-583 1   1691 WINDSTREAM ARKANSAS, INC. 528      
870-583 2   1691 WINDSTREAM ARKANSAS, INC. 528      
870-583 3   1691 WINDSTREAM ARKANSAS, INC. 528      
870-583 4   1691 WINDSTREAM ARKANSAS, INC. 528      
870-583 5   1691 WINDSTREAM ARKANSAS, INC. 528      
870-583 6   1691 WINDSTREAM ARKANSAS, INC. 528      
870-583 7   1691 WINDSTREAM ARKANSAS, INC. 528      
870-583 8   1691 WINDSTREAM ARKANSAS, INC. 528      
870-583 9   508J CENTURYLINK COMMUNICATIONS, LLC 528   2015-03-02   

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

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