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: 978

NPA-NXX BLOCK Rate Centre Region Switch OCN LATA LIR Eff date Disc date
573-978 A Centertown MO   612K CSC VOICE, LLC 521      
573-978 5 Centertown MO   612K CSC VOICE, LLC 521   2024-05-12   
573-978 9 Centertown MO   6534 NEW CINGULAR WIRELESS PCS, LLC - IL 521   2026-04-05   

Last updated: Tue, 16 Jun 2026 00:09:45 UTC

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