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.

Fairdealing, MO

NPA-NXX BLOCK Switch OCN LATA LIR Eff date Disc date
573-857 A FRDLMOXARS0  1885 WINDSTREAM MISSOURI, INC. 520      
573-857 0   1885 WINDSTREAM MISSOURI, INC. 520      
573-857 1   1885 WINDSTREAM MISSOURI, INC. 520      
573-857 2   1885 WINDSTREAM MISSOURI, INC. 520      
573-857 3   1885 WINDSTREAM MISSOURI, INC. 520      
573-857 4   993E BANDWIDTH.COM CLEC, LLC - MO 520   2017-08-06   
573-857 5   093F ONVOY, LLC - MO 520   2021-07-24   
573-857 8   624H ONVOY SPECTRUM, LLC 520   2025-01-11   
573-857 9   1885 WINDSTREAM MISSOURI, INC. 520      

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

Sponsored by: Callcentric - VoIP Internet phone service

Like this site? We accept donations via PayPal.