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: LAMRCOXCDS0

Remotes:

Switch Switch name Switch type
BRGRCOXCRS1  BRISTOL GRANADA  1RC 
CAMPCOXCRS1  CAMPO  1RC 
HLLYCOXCRS1  HOLLY  RSC 
SPFDCOXCRS1  SPRINGFIELD  RSC 
TWBTCOXCRS1  TWO BUTTES  1RC 
WILYCOXCRS1  WILEY  RSC 
WLSHCOXCRS1  WALSH  RSC 
NPA-NXX BLOCK Rate Centre Region OCN LATA LIR Eff date Disc date
719-336 A Lamar CO 2185 CENTURYTEL OF EAGLE, INC. DBA CENTURYLINK 658      

Last updated: Thu, 16 Oct 2025 03:04:18 UTC

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