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: 921

NPA-NXX BLOCK Rate Centre Region Switch OCN LATA LIR Eff date Disc date
870-921 A Lewisville AR LWVLARXADS0  1729 WALNUT HILL TEL. CO. 530      
870-921 0 Lewisville AR   1729 WALNUT HILL TEL. CO. 530      
870-921 1 Lewisville AR   1729 WALNUT HILL TEL. CO. 530      
870-921 2 Lewisville AR   1729 WALNUT HILL TEL. CO. 530      
870-921 3 Lewisville AR   1729 WALNUT HILL TEL. CO. 530      
870-921 4 Lewisville AR   1729 WALNUT HILL TEL. CO. 530      
870-921 5 Lewisville AR   1729 WALNUT HILL TEL. CO. 530      
870-921 6 Lewisville AR   1729 WALNUT HILL TEL. CO. 530      
870-921 7 Lewisville AR   1729 WALNUT HILL TEL. CO. 530      
870-921 8 Lewisville AR   5179 LEVEL 3 COMMUNICATIONS, LLC - AR 530   2018-07-19   
870-921 9 Lewisville AR   1729 WALNUT HILL TEL. CO. 530      

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

Sponsored by: FiberConX Communications Ltd.

Like this site? We accept donations via PayPal.