Local Calling Guide

Area code/prefix search

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NPA: 573 [Rate centres in NPA 573] [Dial plan for NPA 573]

NXX: 278

NPA-NXX BLOCK Rate Centre Region Switch OCN LATA LIR Eff date Disc date
573-278 A Cape Girardeau MO STLSMO05XKX  9748 AMERICAN MESSAGING SERVICES, LLC 520      

Last updated: Thu, 05 Feb 2026 23:41:55 UTC

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