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: 420

NPA-NXX BLOCK Rate Centre Region Switch OCN LATA LIR Eff date Disc date
573-420 A Dixon MO DIXNMOXAPS0  1885 WINDSTREAM MISSOURI, INC. 520      
573-420 0 Dixon MO   145J TERRA NOVA TELECOM INC. 520   2025-10-09   
573-420 9 Dixon MO DIXNMOXAPS0  1885 WINDSTREAM MISSOURI, INC. 520   2015-09-07   

Last updated: Wed, 04 Mar 2026 03:00:52 UTC

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