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: 618

NPA-NXX BLOCK Rate Centre Region Switch OCN LATA LIR Eff date Disc date
573-618 A Marble Hill MO STLSMOWQDS2  093F ONVOY, LLC - MO 520      
573-618 0 Marble Hill MO   6534 NEW CINGULAR WIRELESS PCS, LLC - IL 520   2022-04-01   
573-618 1 Marble Hill MO   093F ONVOY, LLC - MO 520   2022-05-22   
573-618 2 Marble Hill MO   515J IP HORIZON LLC 520   2023-12-29   
573-618 3 Marble Hill MO   515J IP HORIZON LLC 520   2023-12-29   
573-618 4 Marble Hill MO   225F PEERLESS NETWORK OF MISSOURI, LLC - MO 520   2025-02-27   
573-618 8 Marble Hill MO   093F ONVOY, LLC - MO 520   2022-03-26   
573-618 9 Marble Hill MO   624H ONVOY SPECTRUM, LLC 520   2025-01-11   

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

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