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: KLMZMIFADS1

Remotes:

Switch Switch name Switch type
ATHNMIATRSA  ATHENS  DLU 
BLLVMIMNRSA  BELLEVUE  DLU 
FLTNMIMNRSA  FULTON  DLU 
GLBGMIMNRSA  GALESBURG  DLU 
MRSHMIMNDS9  MARSHALL  EWS 
OLVTMIMNRSA  OLIVET  DLU 
PLNWMIMNRSA  PLAINWELL  DLU 
RCLDMIMNRSA  RICHLAND  DLU 
SCTSMIMNRSA  SCOTTS  DLU 
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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