Local Calling Guide

Area code/prefix search

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Switch: STLSMO05X1Y

NPA-NXX BLOCK Rate Centre Region OCN LATA LIR Eff date Disc date
557-248 A St Louis MO 128L E. RITTER COMMUNICATIONS, LLC 520   2026-02-19   
557-248 1 St Louis MO 128L E. RITTER COMMUNICATIONS, LLC 520   2026-02-19   

Last updated: Thu, 16 Jul 2026 02:21:55 UTC

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