Local Calling Guide

Area code/prefix search

Search area code/prefix (NPA/NXX)
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NPA: 573 [Rate centres in NPA 573] [Dial plan for NPA 573]

NXX: 203

NPA-NXX BLOCK Rate Centre Region Switch OCN LATA LIR Eff date Disc date
573-203 A Senath MO STLSMOPLDS4  4932 LEVEL 3 COMMUNICATIONS, LLC - MO 520      
573-203 0 Senath MO   093F ONVOY, LLC - MO 520   2016-09-29   
573-203 1 Senath MO   093F ONVOY, LLC - MO 520   2016-09-29   
573-203 3 Senath MO   993E BANDWIDTH.COM CLEC, LLC - MO 520   2011-08-28   
573-203 4 Senath MO   4932 LEVEL 3 COMMUNICATIONS, LLC - MO 520   2005-01-23   
573-203 5 Senath MO   993E BANDWIDTH.COM CLEC, LLC - MO 520   2012-06-25   
573-203 6 Senath MO   225F PEERLESS NETWORK OF MISSOURI, LLC - MO 520   2013-05-05   
573-203 7 Senath MO   073H TELNYX LLC 520   2018-07-23   
573-203 8 Senath MO   993E BANDWIDTH.COM CLEC, LLC - MO 520   2014-05-24   
573-203 9 Senath MO   225F PEERLESS NETWORK OF MISSOURI, LLC - MO 520   2013-05-05   

Last updated: Thu, 29 Jan 2026 14:35:03 UTC

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