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: 643

NPA-NXX BLOCK Rate Centre Region Switch OCN LATA LIR Eff date Disc date
573-643 A Marston MO MRTNMONIRS2  9533 SOUTHWESTERN BELL 520      
573-643 0 Marston MO MRTNMONIRS2  9533 SOUTHWESTERN BELL 520      
573-643 1 Marston MO MRTNMONIRS2  9533 SOUTHWESTERN BELL 520      
573-643 2 Marston MO MRTNMONIRS2  9533 SOUTHWESTERN BELL 520      
573-643 3 Marston MO STLSMO05RMD  993E BANDWIDTH.COM CLEC, LLC - MO 520   2017-07-29   
573-643 4 Marston MO STLSMOGZDS5  225F PEERLESS NETWORK OF MISSOURI, LLC - MO 520   2018-11-29   
573-643 5 Marston MO STLSMO09WMD  516C AT&T CORP. 520   2011-10-04   
573-643 6 Marston MO MRTNMONIRS2  9533 SOUTHWESTERN BELL 520      
573-643 7 Marston MO STLSMOWQDS2  093F ONVOY, LLC - MO 520   2021-07-24   
573-643 8 Marston MO   145J TERRA NOVA TELECOM INC. 520   2022-07-07   

Last updated: Sun, 26 Jan 2025 15:59:20 UTC

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