Local Calling Guide

Area code/prefix search

Search area code/prefix (NPA/NXX)
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NPA: 406 [Rate centres in NPA 406] [Dial plan for NPA 406]

NXX: 284

NPA-NXX BLOCK Rate Centre Region Switch OCN LATA LIR Eff date Disc date
406-284 A Manhattan MT MNHTMTMARS1  9636 QWEST CORPORATION 650      
406-284 0 Manhattan MT   453F ONVOY, LLC - MT 650   2020-07-26   
406-284 1 Manhattan MT   994E BANDWIDTH.COM CLEC, LLC - MT 650   2014-03-31   
406-284 2 Manhattan MT   792K CHARTER IP ENABLED SERVICES, LLC 650   2005-06-17   
406-284 3 Manhattan MT   9636 QWEST CORPORATION 650      
406-284 4 Manhattan MT   9636 QWEST CORPORATION 650      
406-284 5 Manhattan MT   994E BANDWIDTH.COM CLEC, LLC - MT 650   2015-06-05   
406-284 6 Manhattan MT   9636 QWEST CORPORATION 650      
406-284 7 Manhattan MT   453F ONVOY, LLC - MT 650   2007-03-19   
406-284 8 Manhattan MT   453F ONVOY, LLC - MT 650   2011-10-24   
406-284 9 Manhattan MT   9636 QWEST CORPORATION 650      

Last updated: Thu, 29 Jan 2026 14:35:03 UTC

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