Local Calling Guide

Area code/prefix search

Search area code/prefix (NPA/NXX)
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NPA: 636 [Rate centres in NPA 636] [Dial plan for NPA 636]

NXX: 778

NPA-NXX BLOCK Rate Centre Region Switch OCN LATA LIR Eff date Disc date
636-778 A Chesterfield MO   792K CHARTER IP ENABLED SERVICES, LLC 520      
636-778 0 Chesterfield MO   792K CHARTER IP ENABLED SERVICES, LLC 520      
636-778 1 Chesterfield MO   792K CHARTER IP ENABLED SERVICES, LLC 520   2011-06-24   
636-778 2 Chesterfield MO   792K CHARTER IP ENABLED SERVICES, LLC 520   2012-07-01   
636-778 3 Chesterfield MO   792K CHARTER IP ENABLED SERVICES, LLC 520   2013-09-20   
636-778 4 Chesterfield MO   792K CHARTER IP ENABLED SERVICES, LLC 520   2015-11-22   
636-778 5 Chesterfield MO   792K CHARTER IP ENABLED SERVICES, LLC 520   2018-04-01   
636-778 6 Chesterfield MO STLVMOOH6MD  6529 T-MOBILE USA, INC. 520   2021-04-25   
636-778 7 Chesterfield MO   792K CHARTER IP ENABLED SERVICES, LLC 520   2017-08-13   
636-778 8 Chesterfield MO STLVMOOH6MD  6529 T-MOBILE USA, INC. 520   2021-04-25   
636-778 9 Chesterfield MO   792K CHARTER IP ENABLED SERVICES, LLC 520      

Last updated: Sun, 01 Jun 2025 02:18:11 UTC

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