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.

NPA: 870 [Rate centres in NPA 870] [Dial plan for NPA 870]

NXX: 579

NPA-NXX BLOCK Rate Centre Region Switch OCN LATA LIR Eff date Disc date
870-579 A Waldenburg AR WLBGARXARS1  1721 RICE BELT TEL. CO. 528      
870-579 0 Waldenburg AR   1721 RICE BELT TEL. CO. 528      
870-579 1 Waldenburg AR   1721 RICE BELT TEL. CO. 528      
870-579 2 Waldenburg AR   1721 RICE BELT TEL. CO. 528      
870-579 3 Waldenburg AR   1721 RICE BELT TEL. CO. 528      
870-579 4 Waldenburg AR   1721 RICE BELT TEL. CO. 528      
870-579 5 Waldenburg AR   1721 RICE BELT TEL. CO. 528      
870-579 6 Waldenburg AR   1721 RICE BELT TEL. CO. 528      
870-579 7 Waldenburg AR   1721 RICE BELT TEL. CO. 528      
870-579 8 Waldenburg AR   6534 NEW CINGULAR WIRELESS PCS, LLC - IL 528   2020-06-28   
870-579 9 Waldenburg AR   6534 NEW CINGULAR WIRELESS PCS, LLC - IL 528   2020-06-28   

Last updated: Thu, 29 Jan 2026 14:35:03 UTC

Sponsored by: Execulink Telecom

Like this site? We accept donations via PayPal.