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.
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Switch: CLMAMOXADS0

NPA-NXX BLOCK Rate Centre Region OCN LATA LIR Eff date Disc date
573-256 A Columbia MO 9784 BRIGHTSPEED OF MISSOURI, LLC 521      
573-397 A Columbia MO 9784 BRIGHTSPEED OF MISSOURI, LLC 521      
573-441 A Columbia MO 9784 BRIGHTSPEED OF MISSOURI, LLC 521      
573-442 A Columbia MO 9784 BRIGHTSPEED OF MISSOURI, LLC 521      
573-443 A Columbia MO 9784 BRIGHTSPEED OF MISSOURI, LLC 521      
573-449 A Columbia MO 9784 BRIGHTSPEED OF MISSOURI, LLC 521      
573-499 A Columbia MO 9784 BRIGHTSPEED OF MISSOURI, LLC 521      
573-815 A Columbia MO 9784 BRIGHTSPEED OF MISSOURI, LLC 521      
573-817 A Columbia MO 9784 BRIGHTSPEED OF MISSOURI, LLC 521      
573-874 A Columbia MO 9784 BRIGHTSPEED OF MISSOURI, LLC 521      
573-875 A Columbia MO 9784 BRIGHTSPEED OF MISSOURI, LLC 521      
573-876 A Columbia MO 9784 BRIGHTSPEED OF MISSOURI, LLC 521      

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

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