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: 731

NPA-NXX BLOCK Rate Centre Region Switch OCN LATA LIR Eff date Disc date
573-731 A Monroe City MO STLSMOWQDS2  093F ONVOY, LLC - MO 520      
573-731 0 Monroe City MO   073H TELNYX LLC 520   2020-08-02   
573-731 2 Monroe City MO   093F ONVOY, LLC - MO 520   2019-11-23   
573-731 3 Monroe City MO   093F ONVOY, LLC - MO 520   2018-12-08   
573-731 4 Monroe City MO   093F ONVOY, LLC - MO 520   2019-11-23   
573-731 5 Monroe City MO   993E BANDWIDTH.COM CLEC, LLC - MO 520   2016-06-12   
573-731 6 Monroe City MO   6123 TELEPORT COMMUNICATIONS AMERICA, LLC - MO 520   2020-11-16   
573-731 8 Monroe City MO   093F ONVOY, LLC - MO 520   2021-03-06   
573-731 9 Monroe City MO   4932 LEVEL 3 COMMUNICATIONS, LLC - MO 520   2023-01-20   

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

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