Local Calling Guide

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St Louis, MO

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NPA-NXX BLOCK Switch OCN LATA LIR Eff date Disc date
557-996 9 STLSMO09XMD  7218 TELEPORT COMMUNICATIONS AMERICA, LLC - MO 520   2023-02-24   

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Last updated: Thu, 20 Nov 2025 13:34:34 UTC

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