Local Calling Guide

Area code/prefix search

Search area code/prefix (NPA/NXX)
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Defiance, MO

NPA-NXX BLOCK Switch OCN LATA LIR Eff date Disc date
636-987 A DFNCMOXARS2  9787 BRIGHTSPEED OF MISSOURI, LLC 520      
636-987 0   073H TELNYX LLC 520   2020-07-31   
636-987 1   792K CHARTER IP ENABLED SERVICES, LLC 520   2023-03-05   
636-987 2   9787 BRIGHTSPEED OF MISSOURI, LLC 520      
636-987 3   624H ONVOY SPECTRUM, LLC 520   2021-10-29   
636-987 4   093F ONVOY, LLC - MO 520   2021-03-06   
636-987 5   4932 LEVEL 3 COMMUNICATIONS, LLC - MO 520   2013-10-14   
636-987 9   993E BANDWIDTH.COM CLEC, LLC - MO 520   2021-08-06   

Last updated: Tue, 13 Jan 2026 21:50:02 UTC

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