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: 287

NPA-NXX BLOCK Rate Centre Region Switch OCN LATA LIR Eff date Disc date
573-287 A Piedmont MO STLSMOPLDS4  4932 LEVEL 3 COMMUNICATIONS, LLC - MO 520      
573-287 0 Piedmont MO   624H ONVOY SPECTRUM, LLC 520   2025-01-11   
573-287 3 Piedmont MO   4932 LEVEL 3 COMMUNICATIONS, LLC - MO 520      

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

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