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: 963

NPA-NXX BLOCK Rate Centre Region Switch OCN LATA LIR Eff date Disc date
573-963 A New Madrid MO STLSMOPLDS4  4932 LEVEL 3 COMMUNICATIONS, LLC - MO 520      
573-963 0 New Madrid MO STLSMOWQDS2  093F ONVOY, LLC - MO 520   2016-09-30   
573-963 1 New Madrid MO STLSMOGZEMD  145J TERRA NOVA TELECOM INC. 520   2024-10-24   
573-963 2 New Madrid MO STLVMOOH2MD  6529 T-MOBILE USA, INC. 520   2021-09-17   
573-963 3 New Madrid MO STLTMOBODS1  7432 MCIMETRO ACCESS TRANSMISSION SERVICES LLC - MO 520   2016-11-07   
573-963 4 New Madrid MO STLSMOWQDS2  093F ONVOY, LLC - MO 520   2021-07-24   
573-963 7 New Madrid MO STLSMOPLDS4  4932 LEVEL 3 COMMUNICATIONS, LLC - MO 520   2016-09-24   
573-963 8 New Madrid MO STLSMOGZ6MD  073H TELNYX LLC 520   2018-07-23   

Last updated: Thu, 05 Feb 2026 23:41:55 UTC

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