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: 734

NPA-NXX BLOCK Rate Centre Region Switch OCN LATA LIR Eff date Disc date
573-734 A Bismarck MO BSMRMOPERS0  9533 SOUTHWESTERN BELL 520      
573-734 0 Bismarck MO   225F PEERLESS NETWORK OF MISSOURI, LLC - MO 520   2012-10-15   
573-734 1 Bismarck MO   9533 SOUTHWESTERN BELL 520      
573-734 2 Bismarck MO   9533 SOUTHWESTERN BELL 520      
573-734 3 Bismarck MO   515J IP HORIZON LLC 520   2023-12-30   
573-734 4 Bismarck MO   515J IP HORIZON LLC 520   2013-12-19   
573-734 5 Bismarck MO   073H TELNYX LLC 520   2019-09-30   
573-734 6 Bismarck MO   9533 SOUTHWESTERN BELL 520      
573-734 7 Bismarck MO   508J CENTURYLINK COMMUNICATIONS, LLC 520   2014-07-21   
573-734 8 Bismarck MO   792K CHARTER IP ENABLED SERVICES, LLC 520   2005-12-22   
573-734 9 Bismarck MO   515J IP HORIZON LLC 520   2023-12-30   

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

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