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.

Switch: LTRKARFRXMZ

NPA-NXX BLOCK Rate Centre Region OCN LATA LIR Eff date Disc date
501-451 A Little Rock AR 515J IP HORIZON LLC 528      
501-564 A Sylvan Hills-Sherwood AR 515J IP HORIZON LLC 528   2024-04-08   
870-963 A Helena AR 515J IP HORIZON LLC 528   2024-04-20   
870-964 A Joiner AR 515J IP HORIZON LLC 528   2024-04-20   
870-968 A Wynne AR 515J IP HORIZON LLC 528   2024-04-20   
870-989 A Black Rock AR 515J IP HORIZON LLC 528   2024-04-08   

Last updated: Sat, 05 Apr 2025 03:03:23 UTC

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