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: BRESILBSDS0

Remotes:

Switch Switch name Switch type
AVTNILAVRS0  AVISTON  RSC 
BCKMILBMRS0  BECKEMEYER  RSC 
CRLYILCLRS0  CARLYLE  RSC 
GTWCILGTRS0  GERMANTOWN (CLINTON)  RSC 
NSVLILNVRS0  NASHVILLE  RSC 
TRENILTRRS0  TRENTON  RSC 
NPA-NXX BLOCK Rate Centre Region OCN LATA LIR Eff date Disc date
618-526 A Breese IL 9329 ILLINOIS BELL TEL CO 520      

Last updated: Thu, 29 Jan 2026 14:35:03 UTC

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