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: 523

NPA-NXX BLOCK Rate Centre Region Switch OCN LATA LIR Eff date Disc date
573-523 A Piedmont MO PDMTMOXXPS0  1885 WINDSTREAM MISSOURI, INC. 520      
573-523 5 Piedmont MO STLSMOWQDS2  093F ONVOY, LLC - MO 520   2021-07-24   
573-523 9 Piedmont MO PDMTMOXXPS0  1885 WINDSTREAM MISSOURI, INC. 520   2015-08-26   

Last updated: Thu, 20 Nov 2025 13:34:34 UTC

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