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: 285

NPA-NXX BLOCK Rate Centre Region Switch OCN LATA LIR Eff date Disc date
573-285 A Clarksburg MO CLMAMOWB0MD  4932 LEVEL 3 COMMUNICATIONS, LLC - MO 521      
573-285 1 Clarksburg MO JFCYMOXAXSX  073H TELNYX LLC 521   2020-07-30   
573-285 2 Clarksburg MO CLMAMOXAXIX  093F ONVOY, LLC - MO 521   2018-07-16   
573-285 4 Clarksburg MO CLMAMOWB0MD  4932 LEVEL 3 COMMUNICATIONS, LLC - MO 521      
573-285 8 Clarksburg MO JFCYMOXAX6Y  624H ONVOY SPECTRUM, LLC 521   2024-03-05   

Last updated: Sun, 27 Apr 2025 12:48:38 UTC

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