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: 683

NPA-NXX BLOCK Rate Centre Region Switch OCN LATA LIR Eff date Disc date
573-683 A Charleston MO CHTNMOMURS2  9533 SOUTHWESTERN BELL 520      
573-683 0 Charleston MO   6534 NEW CINGULAR WIRELESS PCS, LLC - IL 520      
573-683 1 Charleston MO   6534 NEW CINGULAR WIRELESS PCS, LLC - IL 520      
573-683 2 Charleston MO   9533 SOUTHWESTERN BELL 520      
573-683 3 Charleston MO   9533 SOUTHWESTERN BELL 520      
573-683 4 Charleston MO   9533 SOUTHWESTERN BELL 520      
573-683 5 Charleston MO   9533 SOUTHWESTERN BELL 520      
573-683 6 Charleston MO   9533 SOUTHWESTERN BELL 520      
573-683 7 Charleston MO   9533 SOUTHWESTERN BELL 520      
573-683 8 Charleston MO   225F PEERLESS NETWORK OF MISSOURI, LLC - MO 520   2013-05-05   
573-683 9 Charleston MO   515J IP HORIZON LLC 520   2013-12-19   

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

Sponsored by: ISP Telecom

Like this site? We accept donations via PayPal.