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: LAMLILXARS0

NPA-NXX BLOCK Rate Centre Region OCN LATA LIR Eff date Disc date
815-638 A La Moille IL 1015 FRONTIER NORTH, INC. - IL 368      
815-638 1 La Moille IL 1015 FRONTIER NORTH, INC. - IL 368      
815-638 2 La Moille IL 1015 FRONTIER NORTH, INC. - IL 368      
815-638 3 La Moille IL 1015 FRONTIER NORTH, INC. - IL 368      

Last updated: Sun, 27 Apr 2025 12:48:38 UTC

Sponsored by: FiberConX Communications Ltd.

Like this site? We accept donations via PayPal.