Local Calling Guide

Area code/prefix search

Search area code/prefix (NPA/NXX)
  • Effective date searches are available only for US area codes. Our sources for non-US NPA-NXX data do not provide this information.
  • If you want to search an entire area code regardless of activity, leave both the next and past days fields set to zero.

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 LTRKARFRXFY  624H ONVOY SPECTRUM, LLC 528   2024-04-20   
501-493 3 LTRKARFRXLY  348F ONVOY, LLC - AR 528   2021-08-23   
501-991 A CRSPARMARS2  9533 SOUTHWESTERN BELL 528      
501-991 0 LTRKARFRXLY  348F ONVOY, LLC - AR 528   2019-01-12   
501-991 1 CRSPARMARS2  9533 SOUTHWESTERN BELL 528      
501-991 2 LTRKARFRXWY  516C AT&T CORP. 528   2011-04-25   
501-991 3 CRSPARMARS2  9533 SOUTHWESTERN BELL 528      
501-991 4 LTRKARFRXKY  196F BANDWIDTH.COM CLEC, LLC - AR 528   2015-02-15   
501-991 5 LTRKARFRXLY  348F ONVOY, LLC - AR 528   2017-03-27   
501-991 6 LTRKARWTBMD  5179 LEVEL 3 COMMUNICATIONS, LLC - AR 528   2017-09-11   
501-991 7 RLVLARFI2MD  508J CENTURYLINK COMMUNICATIONS, LLC 528   2015-01-13   
501-991 8 LTRKARFRXLY  348F ONVOY, LLC - AR 528   2019-01-12   
501-991 9 LTRKARZO2MD  073H TELNYX LLC 528   2018-11-26   

Last updated: Thu, 20 Nov 2025 13:34:34 UTC

Sponsored by: ISP Telecom

Like this site? We accept donations via PayPal.