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.

Piedmont, MO

NPA-NXX BLOCK Switch OCN LATA LIR Eff date Disc date
573-223 A PDMTMOXXDS0  1885 WINDSTREAM MISSOURI, INC. 520      
573-223 0 PDMTMOXXRP0  1885 WINDSTREAM MISSOURI, INC. 520      
573-223 1 PDMTMOXXDS0  1885 WINDSTREAM MISSOURI, INC. 520      
573-223 2 PDMTMOXXDS0  1885 WINDSTREAM MISSOURI, INC. 520      
573-223 3 PDMTMOXXDS0  1885 WINDSTREAM MISSOURI, INC. 520      
573-223 4 PDMTMOXXDS0  1885 WINDSTREAM MISSOURI, INC. 520      
573-223 7 PDMTMOXXDS0  1885 WINDSTREAM MISSOURI, INC. 520      
573-223 8 STLSMO05RMD  993E BANDWIDTH.COM CLEC, LLC - MO 520   2019-12-23   
573-223 9 PDMTMOXXDS0  1885 WINDSTREAM MISSOURI, INC. 520      
573-287 A STLSMOPLDS4  4932 LEVEL 3 COMMUNICATIONS, LLC - MO 520      
573-287 0 STLSMO05XMX  624H ONVOY SPECTRUM, LLC 520   2025-01-11   
573-287 3 STLSMOPLDS4  4932 LEVEL 3 COMMUNICATIONS, LLC - MO 520      
573-523 A PDMTMOXXPS0  1885 WINDSTREAM MISSOURI, INC. 520      
573-523 5 STLSMOWQDS2  093F ONVOY, LLC - MO 520   2021-07-24   
573-523 9 PDMTMOXXPS0  1885 WINDSTREAM MISSOURI, INC. 520   2015-08-26   

Last updated: Sun, 26 Jan 2025 15:59:20 UTC

Sponsored by: ISP Telecom

Like this site? We accept donations via PayPal.