Local Calling Guide

Area code/prefix search

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NPA: 573 [Rate centres in NPA 573] [Dial plan for NPA 573]

NXX: 564

NPA-NXX BLOCK Rate Centre Region Switch OCN LATA LIR Eff date Disc date
573-564 A Montgomery City MO MTCYMOLORS1  9533 SOUTHWESTERN BELL 520      
573-564 0 Montgomery City MO STLSMO09WMD  516C AT&T CORP. 520   2013-11-08   
573-564 1 Montgomery City MO MTCYMOLORS1  9533 SOUTHWESTERN BELL 520      
573-564 2 Montgomery City MO MTCYMOLORS1  9533 SOUTHWESTERN BELL 520      
573-564 3 Montgomery City MO MTCYMOLORS1  9533 SOUTHWESTERN BELL 520      
573-564 4 Montgomery City MO STLSMO05RMD  993E BANDWIDTH.COM CLEC, LLC - MO 520   2012-03-05   
573-564 5 Montgomery City MO STLSMO09XMD  6123 TELEPORT COMMUNICATIONS AMERICA, LLC - MO 520   2020-01-13   
573-564 6 Montgomery City MO MTCYMOLORS1  9533 SOUTHWESTERN BELL 520      
573-564 7 Montgomery City MO STLSMOPLDS4  4932 LEVEL 3 COMMUNICATIONS, LLC - MO 520   2018-04-21   
573-564 8 Montgomery City MO MTCYMOLORS1  9533 SOUTHWESTERN BELL 520      
573-564 9 Montgomery City MO STLSMOGZ6MD  073H TELNYX LLC 520   2018-10-24   

Last updated: Fri, 10 Jul 2026 02:55:48 UTC

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