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: 956

NPA-NXX BLOCK Rate Centre Region Switch OCN LATA LIR Eff date Disc date
573-956 A Montgomery City MO STLSMOWQDS2  093F ONVOY, LLC - MO 520      
573-956 0 Montgomery City MO   515J IP HORIZON LLC 520   2023-12-09   
573-956 1 Montgomery City MO   515J IP HORIZON LLC 520   2023-12-09   
573-956 5 Montgomery City MO   093F ONVOY, LLC - MO 520   2021-05-13   
573-956 8 Montgomery City MO   624H ONVOY SPECTRUM, LLC 520   2024-03-23   

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

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