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: ANNAILXEDS0

Remotes:

Switch Switch name Switch type
CBDNILXERS0  COBDEN  GTR 
CYPRILXERS0  CYPRESS  GTR 
DONGILXERS0  DONGOLA  GTR 
KRNKILXERS0  KARNAK  GTR 
ULLNILXERS0  ULLIN  GTR 
VLRGILXERS0  VILLA RIDGE  GTR 
NPA-NXX BLOCK Rate Centre Region OCN LATA LIR Eff date Disc date
618-833 A Anna IL 1015 FRONTIER NORTH, INC. - IL 362      

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

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