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: 423

NPA-NXX BLOCK Rate Centre Region Switch OCN LATA LIR Eff date Disc date
573-423 A Belleview MO STLSMOWQDS2  093F ONVOY, LLC - MO 520      
573-423 0 Belleview MO   073H TELNYX LLC 520   2020-07-25   
573-423 1 Belleview MO   792K CHARTER IP ENABLED SERVICES, LLC 520   2024-07-07   
573-423 2 Belleview MO   093F ONVOY, LLC - MO 520   2021-03-07   
573-423 3 Belleview MO   093F ONVOY, LLC - MO 520   2021-07-12   
573-423 4 Belleview MO   093F ONVOY, LLC - MO 520   2018-12-09   
573-423 5 Belleview MO   7218 TELEPORT COMMUNICATIONS AMERICA, LLC - MO 520   2023-04-16   
573-423 6 Belleview MO   624H ONVOY SPECTRUM, LLC 520   2021-07-02   
573-423 7 Belleview MO   4932 LEVEL 3 COMMUNICATIONS, LLC - MO 520   2013-10-14   
573-423 8 Belleview MO   624H ONVOY SPECTRUM, LLC 520   2021-11-16   
573-423 9 Belleview MO   624H ONVOY SPECTRUM, LLC 520   2021-11-16   

Last updated: Thu, 01 Jan 2026 03:59:49 UTC

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