Local Calling Guide

Area code/prefix search

Search area code/prefix (NPA/NXX)
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NPA-NXX BLOCK Rate Centre Region OCN LATA LIR Eff date Disc date
636-987 5 Defiance MO 4932 LEVEL 3 COMMUNICATIONS, LLC - MO 520   2013-10-14   

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

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