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: 531

NPA-NXX BLOCK Rate Centre Region Switch OCN LATA LIR Eff date Disc date
573-531 A Timber MO WNVLMOXAXXX  093F ONVOY, LLC - MO 520      
573-531 0 Timber MO STLSMOWQ8MD  073H TELNYX LLC 520   2020-08-08   
573-531 2 Timber MO STLSMOWQDS2  093F ONVOY, LLC - MO 520   2019-11-23   
573-531 3 Timber MO STLSMOWQDS2  093F ONVOY, LLC - MO 520   2019-11-23   
573-531 4 Timber MO STLSMOWQDS2  093F ONVOY, LLC - MO 520   2021-03-06   
573-531 5 Timber MO STLSMOWQDS2  093F ONVOY, LLC - MO 520   2018-12-08   
573-531 7 Timber MO STLSMOPLDS4  4932 LEVEL 3 COMMUNICATIONS, LLC - MO 520   2013-10-14   
573-531 8 Timber MO   993E BANDWIDTH.COM CLEC, LLC - MO 520   2025-12-11   

Last updated: Sun, 07 Dec 2025 22:02:11 UTC

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