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: CLMAMOXBDS0

Remotes:

Switch Switch name Switch type
ASLDMOXARS0  ASHLAND  GTR 
CENLMOXARS0  CENTRALIA  GTR 
CLRKMOXARS0  CLARK  GTL 
HLVLMOXARS0  HALLSVILLE  GTR 
RHPTMOXBRS0  ROCHEPORT  GTR 
STGNMOXARS0  STURGEON  GTR 
NPA-NXX BLOCK Rate Centre Region OCN LATA LIR Eff date Disc date
573-234 A Columbia MO 9784 BRIGHTSPEED OF MISSOURI, LLC 521      
573-445 A Columbia MO 9784 BRIGHTSPEED OF MISSOURI, LLC 521      
573-446 A Columbia MO 9784 BRIGHTSPEED OF MISSOURI, LLC 521      
573-447 A Columbia MO 9784 BRIGHTSPEED OF MISSOURI, LLC 521      

Last updated: Tue, 13 Jan 2026 21:50:02 UTC

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