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.

Mineral Springs, AR

NPA-NXX BLOCK Switch OCN LATA LIR Eff date Disc date
870-287 A MNSPARXADS0  1729 WALNUT HILL TEL. CO. 528      
870-287 0   1729 WALNUT HILL TEL. CO. 528      
870-287 1   1729 WALNUT HILL TEL. CO. 528      
870-287 2   1729 WALNUT HILL TEL. CO. 528      
870-287 3   1729 WALNUT HILL TEL. CO. 528      
870-287 4   1729 WALNUT HILL TEL. CO. 528      
870-287 5   1729 WALNUT HILL TEL. CO. 528      
870-287 6   1729 WALNUT HILL TEL. CO. 528      
870-287 7   1729 WALNUT HILL TEL. CO. 528      
870-287 8   1729 WALNUT HILL TEL. CO. 528      
870-287 9   5179 LEVEL 3 COMMUNICATIONS, LLC - AR 528   2021-10-22   

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

Sponsored by: ISP Telecom

Like this site? We accept donations via PayPal.