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.

Westphalia, MI

NPA-NXX BLOCK Switch OCN LATA LIR Eff date Disc date
989-587 A WPHLMIXIDS1  0735 WESTPHALIA TEL. CO. 344      
989-587 0   0735 WESTPHALIA TEL. CO. 344      
989-587 1   0735 WESTPHALIA TEL. CO. 344      
989-587 2   0735 WESTPHALIA TEL. CO. 344      
989-587 3   0735 WESTPHALIA TEL. CO. 344      
989-587 4   0735 WESTPHALIA TEL. CO. 344      
989-587 5   0735 WESTPHALIA TEL. CO. 344      
989-587 6   0735 WESTPHALIA TEL. CO. 344      
989-587 7   0735 WESTPHALIA TEL. CO. 344      
989-587 8   490J DISH WIRELESS, LLC 344   2022-08-28   
989-587 9   0735 WESTPHALIA TEL. CO. 344      

Last updated: Thu, 01 Jan 2026 03:59:49 UTC

Sponsored by: FiberConX Communications Ltd.

Like this site? We accept donations via PayPal.