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: DKLBILXADS0

Remotes:

Switch Switch name Switch type
HNCKILXARS0  HINCKLEY  RSC 
MALTILXARS0  MALTA  RSC 
MAPKILXARS0  MAPLE PARK  RSC 
SHBNILXARS0  SHABBONA  RSC 
WTMNILXARS0  WATERMAN  RSC 
NPA-NXX BLOCK Rate Centre Region OCN LATA LIR Eff date Disc date
815-748 A De Kalb IL 1036 FRONTIER NORTH, INC. - IL 364      
815-752 A De Kalb IL 1036 FRONTIER NORTH, INC. - IL 364      
815-753 A De Kalb IL 1036 FRONTIER NORTH, INC. - IL 364      
815-756 A De Kalb IL 1036 FRONTIER NORTH, INC. - IL 364      
815-758 A De Kalb IL 1036 FRONTIER NORTH, INC. - IL 364      
815-787 A De Kalb IL 1036 FRONTIER NORTH, INC. - IL 364      

Last updated: Tue, 13 Jan 2026 21:50:02 UTC

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