Local Calling Guide

Area code/prefix search

Search area code/prefix (NPA/NXX)
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NPA: 816 [Rate centres in NPA 816] [Dial plan for NPA 816]

NXX: 623

NPA-NXX BLOCK Rate Centre Region Switch OCN LATA LIR Eff date Disc date
816-623 A Greenwood MO KSCYMO41DS0  9533 SOUTHWESTERN BELL 524      
816-623 0 Greenwood MO   993E BANDWIDTH.COM CLEC, LLC - MO 524   2018-04-12   
816-623 1 Greenwood MO   093F ONVOY, LLC - MO 524   2016-03-31   
816-623 2 Greenwood MO   093F ONVOY, LLC - MO 524   2016-03-31   
816-623 3 Greenwood MO   9533 SOUTHWESTERN BELL 524      
816-623 4 Greenwood MO   093F ONVOY, LLC - MO 524   2026-01-10   
816-623 5 Greenwood MO   318J COMCAST IP PHONE, LLC 524   2011-11-22   
816-623 6 Greenwood MO   993E BANDWIDTH.COM CLEC, LLC - MO 524   2018-10-18   
816-623 7 Greenwood MO   508J CENTURYLINK COMMUNICATIONS, LLC 524   2014-03-26   
816-623 8 Greenwood MO   093F ONVOY, LLC - MO 524   2019-01-13   
816-623 9 Greenwood MO   9533 SOUTHWESTERN BELL 524      

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

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