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: 231

NPA-NXX BLOCK Rate Centre Region Switch OCN LATA LIR Eff date Disc date
573-231 A Hannibal MO HNBLMOACDSA  9533 SOUTHWESTERN BELL 520      
573-231 0 Hannibal MO   9533 SOUTHWESTERN BELL 520      
573-231 1 Hannibal MO   9533 SOUTHWESTERN BELL 520      
573-231 2 Hannibal MO   6275 UNITED STATES CELLULAR - MO 520      
573-231 3 Hannibal MO   9533 SOUTHWESTERN BELL 520      
573-231 4 Hannibal MO   6534 NEW CINGULAR WIRELESS PCS, LLC - IL 520   2009-11-12   
573-231 5 Hannibal MO   6275 UNITED STATES CELLULAR - MO 520      
573-231 6 Hannibal MO   6275 UNITED STATES CELLULAR - MO 520      
573-231 7 Hannibal MO   993E BANDWIDTH.COM CLEC, LLC - MO 520   2003-08-19   
573-231 8 Hannibal MO   6529 T-MOBILE USA, INC. 520   2005-09-09   
573-231 9 Hannibal MO   6275 UNITED STATES CELLULAR - MO 520   2007-08-07   

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

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