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: 640

NPA-NXX BLOCK Rate Centre Region Switch OCN LATA LIR Eff date Disc date
573-640 A Silex MO STLSMO05RMD  993E BANDWIDTH.COM CLEC, LLC - MO 520      
573-640 0 Silex MO STLSMO05RMD  993E BANDWIDTH.COM CLEC, LLC - MO 520      
573-640 1 Silex MO OVLDMOBKDS0  5607 CHARTER FIBERLINK - MISSOURI, LLC - MO 520      

Last updated: Wed, 20 Nov 2024 21:20:06 UTC

Sponsored by: VoIP Much Phone Company

Like this site? We accept donations via PayPal.