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: 921

NPA-NXX BLOCK Rate Centre Region Switch OCN LATA LIR Eff date Disc date
573-921 A Ewing MO STLSMOWQDS2  093F ONVOY, LLC - MO 520      
573-921 0 Ewing MO   993E BANDWIDTH.COM CLEC, LLC - MO 520   2022-02-21   
573-921 2 Ewing MO   093F ONVOY, LLC - MO 520   2018-12-08   
573-921 3 Ewing MO   093F ONVOY, LLC - MO 520   2021-03-06   

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

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