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: 623

NPA-NXX BLOCK Rate Centre Region Switch OCN LATA LIR Eff date Disc date
573-623 A Oates MO STLSMOWQDS2  093F ONVOY, LLC - MO 520      
573-623 0 Oates MO STLSMO05XMX  624H ONVOY SPECTRUM, LLC 520   2024-03-23   
573-623 2 Oates MO STLSMOWQDS2  093F ONVOY, LLC - MO 520   2021-03-07   
573-623 6 Oates MO STLSMOWQDS2  093F ONVOY, LLC - MO 520   2018-12-07   
573-623 7 Oates MO STLSMOPLDS4  4932 LEVEL 3 COMMUNICATIONS, LLC - MO 520   2014-05-05   

Last updated: Sun, 27 Apr 2025 12:48:38 UTC

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