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: 440

NPA-NXX BLOCK Rate Centre Region Switch OCN LATA LIR Eff date Disc date
573-440 A Fredericktown MO STLTMOBOAMD  5814 CELLCO PARTNERSHIP DBA VERIZON WIRELESS - MO 520      
573-440 0 Fredericktown MO   5814 CELLCO PARTNERSHIP DBA VERIZON WIRELESS - MO 520      
573-440 1 Fredericktown MO   225F PEERLESS NETWORK OF MISSOURI, LLC - MO 520   2012-10-15   
573-440 2 Fredericktown MO   093F ONVOY, LLC - MO 520   2024-07-29   
573-440 3 Fredericktown MO   6534 NEW CINGULAR WIRELESS PCS, LLC - IL 520   2020-09-19   
573-440 4 Fredericktown MO   6534 NEW CINGULAR WIRELESS PCS, LLC - IL 520   2014-12-19   
573-440 5 Fredericktown MO   516C AT&T CORP. 520   2011-10-04   
573-440 6 Fredericktown MO   515J IP HORIZON LLC 520   2013-12-19   
573-440 7 Fredericktown MO   993E BANDWIDTH.COM CLEC, LLC - MO 520   2025-12-12   
573-440 8 Fredericktown MO   073H TELNYX LLC 520   2017-06-13   
573-440 9 Fredericktown MO   093F ONVOY, LLC - MO 520   2019-02-02   

Last updated: Tue, 13 Jan 2026 21:50:02 UTC

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