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.

Richwoods, MO

NPA-NXX BLOCK Switch OCN LATA LIR Eff date Disc date
573-342 A STLSMOPLRS0  4932 LEVEL 3 COMMUNICATIONS, LLC - MO 520      
573-342 0   4932 LEVEL 3 COMMUNICATIONS, LLC - MO 520   2007-12-17   
573-342 1   093F ONVOY, LLC MO 520   2016-09-29   
573-342 2   023B BIG RIVER TELEPHONE COMPANY, LLC - MO 520   2003-10-01   
573-342 3   993E BANDWIDTH.COM CLEC, LLC - MO 520   2014-05-24   
573-342 4   4932 LEVEL 3 COMMUNICATIONS, LLC - MO 520   2005-01-23   
573-342 5   4932 LEVEL 3 COMMUNICATIONS, LLC - MO 520   2008-02-01   
573-342 6   993E BANDWIDTH.COM CLEC, LLC - MO 520   2011-09-17   
573-342 7   554A SOCKET TELECOM, LLC - MO 520   2004-09-26   
573-342 8   173H LOCAL ACCESS LLC - MO 520   2013-12-19   
573-342 9   993E BANDWIDTH.COM CLEC, LLC - MO 520   2009-01-18   
573-678 A RCWDMOORRS1  9533 SOUTHWESTERN BELL 520      
573-678 1   9533 SOUTHWESTERN BELL 520      
573-678 2   9533 SOUTHWESTERN BELL 520      
573-678 3   093F ONVOY, LLC MO 520   2016-04-04   
573-678 4   225F PEERLESS NETWORK OF MISSOURI, LLC - MO 520   2013-05-05   
573-678 5   093F ONVOY, LLC MO 520   2016-04-04   
573-678 6   516C AT&T CORP. 520   2011-05-20   
573-678 7   7575 CENTURYLINK COMMUNICATIONS LLC 520   2014-07-24   
573-678 8   225F PEERLESS NETWORK OF MISSOURI, LLC - MO 520   2013-05-05   
573-678 9   093F ONVOY, LLC MO 520   2016-09-29   
573-802 A   993E BANDWIDTH.COM CLEC, LLC - MO 520      
573-802 0   993E BANDWIDTH.COM CLEC, LLC - MO 520   2017-03-17   
573-802 1   073H TELNYX LLC 520   2018-07-23   

Last updated: Sat, 11 Jul 2020 20:37:26 UTC

Sponsored by: VoIP Much Phone Company

Like this site? We accept donations via PayPal.