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: CHTNWVJADS0

Remotes:

Switch Switch name Switch type
ALNAPAALHPA  ALTOONA  5E 
BLFDWVXA8MD    POI 
JHTWPAXJ7MD    POI 
MRBGWVBUHPA  MARTINSBURG  5E 
NWMRWVWZHPA  NEW MARTINSVILLE  5E 
WASHPAWAHPT  WASHINGTON  5E 
NPA-NXX BLOCK Rate Centre Region OCN LATA LIR Eff date Disc date

Last updated: Sat, 01 Aug 2026 03:19:33 UTC

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