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.

NPA: 573 [Rate centres in NPA 573] [Dial plan for NPA 573]

NXX: 657

NPA-NXX BLOCK Rate Centre Region Switch OCN LATA LIR Eff date Disc date
573-657 A Ashland MO ASLDMOXARS0  9784 BRIGHTSPEED OF MISSOURI, LLC 521      
573-657 0 Ashland MO   9784 BRIGHTSPEED OF MISSOURI, LLC 521      
573-657 1 Ashland MO   9784 BRIGHTSPEED OF MISSOURI, LLC 521      
573-657 2 Ashland MO   9784 BRIGHTSPEED OF MISSOURI, LLC 521      
573-657 3 Ashland MO   554A SOCKET TELECOM, LLC - MO 521   2004-09-19   
573-657 4 Ashland MO   9784 BRIGHTSPEED OF MISSOURI, LLC 521      
573-657 5 Ashland MO   9784 BRIGHTSPEED OF MISSOURI, LLC 521      
573-657 6 Ashland MO   9784 BRIGHTSPEED OF MISSOURI, LLC 521      
573-657 7 Ashland MO   9784 BRIGHTSPEED OF MISSOURI, LLC 521      
573-657 8 Ashland MO   9784 BRIGHTSPEED OF MISSOURI, LLC 521      
573-657 9 Ashland MO   9784 BRIGHTSPEED OF MISSOURI, LLC 521      

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

Sponsored by: FiberConX Communications Ltd.

Like this site? We accept donations via PayPal.