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.

Switch: WPHLMIXIDS1

Remotes:

Switch Switch name Switch type
LNNHMIQDRS1  LANSING  RS 
STJHMICJRS1  ST JOHNS  RS 
NPA-NXX BLOCK Rate Centre Region OCN LATA LIR Eff date Disc date
989-587 A Westphalia MI 0735 WESTPHALIA TEL. CO. 344      
989-587 0 Westphalia MI 0735 WESTPHALIA TEL. CO. 344      
989-587 1 Westphalia MI 0735 WESTPHALIA TEL. CO. 344      
989-587 2 Westphalia MI 0735 WESTPHALIA TEL. CO. 344      
989-587 3 Westphalia MI 0735 WESTPHALIA TEL. CO. 344      
989-587 4 Westphalia MI 0735 WESTPHALIA TEL. CO. 344      
989-587 5 Westphalia MI 0735 WESTPHALIA TEL. CO. 344      
989-587 6 Westphalia MI 0735 WESTPHALIA TEL. CO. 344      
989-587 7 Westphalia MI 0735 WESTPHALIA TEL. CO. 344      
989-587 9 Westphalia MI 0735 WESTPHALIA TEL. CO. 344      

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

Sponsored by: VoIP Much Phone Company

Like this site? We accept donations via PayPal.