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: NVCYCA11DS0

Remotes:

Switch Switch name Switch type
ALGHCA11RS0  ALLEGHANY  RLC 
CMPVCA11RS0  CAMPTONVILLE  RSC 
DWNVCA11RS1  DOWNIEVILLE  RSC 
NSJNCA11RS0  NORTH SAN JUAN  RSC 
SRCYCA11RS1  SIERRA CITY  RSC 
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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