Local Calling Guide

Area code/prefix search

Search area code/prefix (NPA/NXX)
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Switch: CLMAMOXAQMD

NPA-NXX BLOCK Rate Centre Region OCN LATA LIR Eff date Disc date
573-777 A Columbia MO 554A SOCKET TELECOM, LLC - MO 521      
573-777 1 Columbia MO 554A SOCKET TELECOM, LLC - MO 521   2003-08-04   

Last updated: Sat, 01 Aug 2026 03:19:33 UTC

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