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: 464

NPA-NXX BLOCK Rate Centre Region Switch OCN LATA LIR Eff date Disc date
573-464 A California MO CLMAMOWB0MD  4932 LEVEL 3 COMMUNICATIONS, LLC - MO 521      
573-464 3 California MO   093F ONVOY, LLC - MO 521   2019-05-23   
573-464 4 California MO   4932 LEVEL 3 COMMUNICATIONS, LLC - MO 521      
573-464 6 California MO   093F ONVOY, LLC - MO 521   2019-05-23   

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

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