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: 203

NPA-NXX BLOCK Rate Centre Region Switch OCN LATA LIR Eff date Disc date
636-203 A Fenton MO STLTMOBODS1  7432 MCIMETRO ACCESS TRANSMISSION SERVICES LLC - MO 520      
636-203 1 Fenton MO STLSMOWQDS2  093F ONVOY, LLC - MO 520   2024-03-03   
636-203 2 Fenton MO STLSMOWQDS2  093F ONVOY, LLC - MO 520   2024-05-12   
636-203 3 Fenton MO STLSMOWQDS2  093F ONVOY, LLC - MO 520   2024-06-30   
636-203 4 Fenton MO STLTMOBODS1  7432 MCIMETRO ACCESS TRANSMISSION SERVICES LLC - MO 520   2006-09-14   
636-203 5 Fenton MO STLTMOBODS1  7432 MCIMETRO ACCESS TRANSMISSION SERVICES LLC - MO 520   2006-09-14   
636-203 7 Fenton MO STLSMO05RMD  993E BANDWIDTH.COM CLEC, LLC - MO 520   2011-09-17   
636-203 8 Fenton MO STLSMO05RMD  993E BANDWIDTH.COM CLEC, LLC - MO 520   2014-03-31   
636-203 9 Fenton MO STLTMOBODS1  7432 MCIMETRO ACCESS TRANSMISSION SERVICES LLC - MO 520      

Last updated: Wed, 18 Jun 2025 02:30:00 UTC

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