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: NWMDMOSHRS0

NPA-NXX BLOCK Rate Centre Region OCN LATA LIR Eff date Disc date
573-748 A New Madrid MO 9533 SOUTHWESTERN BELL 520      
573-748 1 New Madrid MO 9533 SOUTHWESTERN BELL 520      
573-748 2 New Madrid MO 9533 SOUTHWESTERN BELL 520      
573-748 5 New Madrid MO 9533 SOUTHWESTERN BELL 520      
573-748 7 New Madrid MO 9533 SOUTHWESTERN BELL 520      
573-748 9 New Madrid MO 9533 SOUTHWESTERN BELL 520      

Last updated: Fri, 13 May 2022 22:16:13 UTC

Sponsored by: VoiceMeUp - Corporate VoIP Services

Like this site? We accept donations via PayPal.