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: KNVMTNVODS0

Remotes:

Switch Switch name Switch type
CLTNTNMARS1  CLINTON  RS 
KNVMTNVORS0  KNOXVILLE  RS 
MAVLTNMARS0  MARYVILLE  RS 
MSCTTNMTRS0  MASCOT  RS 
OKRGTNMTRS0  OAK RIDGE  RS 
SVVLTNMTRS0  SEVIERVILLE  RS 
NPA-NXX BLOCK Rate Centre Region OCN LATA LIR Eff date Disc date

Last updated: Thu, 20 Nov 2025 13:34:34 UTC

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