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: NWLNCT02DS0

Remotes:

Switch Switch name Switch type
DPRVCT00RS0  Deep River, CT (Remote)  5ER 
ESSXCT00RS0  Essex, CT (Remote)  5ER 
LYMECT01RS0  Lyme, CT (Remote)  5ER 
NINTCT00RS1  Niantic, CT (Remote)  5ER 
OLSYCT00RS0  Old Saybrook, CT (Remote)  5ER 
WSBKCT00RS0  Westbrook, CT (Remote)  5ER 
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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