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: SLBRMDSBDS0

Remotes:

Switch Switch name Switch type
BRLNMDBLRS1  BERLIN  RSC 
BSHPMDBPRS0  BISHOP  RSC 
CRFDMDCRRS0  CRISFIELD  RSC 
DLISMDDLRS0  DEAL ISLAND  RSC 
MARNMDMARS1  MARION  RSC 
OCPNMDCRRS1  OCEAN PINES  RSC 
PCCYMDPKRS0  POCOMOKE  RSC 
PRANMDPARS1  PRINCESS ANNE  RSC 
SMISMDSIRS0  SMITH ISLAND  RLC 
SNHLMDSHRS0  SNOW HILL  RSC 
WOCYMDBARS0  WEST OCEAN CITY  RSC 
NPA-NXX BLOCK Rate Centre Region OCN LATA LIR Eff date Disc date

Last updated: Thu, 16 Oct 2025 03:04:18 UTC

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