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: WHTHYTXB04T

Remotes:

Switch Switch name Switch type
CHLTVU41RS0  CHESTERFIELD INLET  RS 
CRMKYTXNRS1  CARMACKS  RS 
DWCYYTXNRS1  DAWSON CITY  RS 
GAHNVUXNRS0  GJOA HAVEN  RS 
MAYOYTXNRS1  MAYO  RS 
RSRVYTXNRS1  ROSS RIVER  RS 
TSLNYTXNRS1  TESLIN  RS 
WHCVVU54RS0  WHALE COVE  RS 
WTLKYTXNRS1  WATSON LAKE  RS 
NPA-NXX BLOCK Rate Centre Region OCN LATA LIR Eff date Disc date

Last updated: Thu, 16 Jul 2026 02:21:55 UTC

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