Local Calling Guide

Area code/prefix search

Search area code/prefix (NPA/NXX)
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Crystal Springs, AR

NPA-NXX BLOCK Switch OCN LATA LIR Eff date Disc date
501-493 A LTRKARFRXLY  348F ONVOY, LLC - AR 528      
501-493 0   515J IP HORIZON LLC 528   2024-03-11   
501-493 1   624H ONVOY SPECTRUM, LLC 528   2024-04-20   
501-493 3   348F ONVOY, LLC - AR 528   2021-08-23   
501-991 A CRSPARMARS2  9533 SOUTHWESTERN BELL 528      
501-991 0   348F ONVOY, LLC - AR 528   2019-01-12   
501-991 1   9533 SOUTHWESTERN BELL 528      
501-991 2   516C AT&T CORP. 528   2011-04-25   
501-991 3   9533 SOUTHWESTERN BELL 528      
501-991 4   196F BANDWIDTH.COM CLEC, LLC - AR 528   2015-02-15   
501-991 5   348F ONVOY, LLC - AR 528   2017-03-27   
501-991 6   5179 LEVEL 3 COMMUNICATIONS, LLC - AR 528   2017-09-11   
501-991 7   508J CENTURYLINK COMMUNICATIONS, LLC 528   2015-01-13   
501-991 8   348F ONVOY, LLC - AR 528   2019-01-12   
501-991 9   073H TELNYX LLC 528   2018-11-26   

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

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