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.

Washington, AR

NPA-NXX BLOCK Switch OCN LATA LIR Eff date Disc date
870-721 A LTRKARWTBMD  5179 LEVEL 3 COMMUNICATIONS, LLC - AR 528      
870-721 2 LTRKARWTBMD  5179 LEVEL 3 COMMUNICATIONS, LLC - AR 528   2019-07-16   
870-983 A FLTNARXADS0  1724 SOUTHWEST ARKANSAS TEL. COOP., INC. 528      

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

Sponsored by: VoIP Much Phone Company

Like this site? We accept donations via PayPal.