Local Calling Guide

Area code/prefix search

Search area code/prefix (NPA/NXX)
  • Effective date searches are available only for US area codes. Our sources for non-US NPA-NXX data do not provide this information.
  • If you want to search an entire area code regardless of activity, leave both the next and past days fields set to zero.

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 BLNGMTAS9MD  453F ONVOY, LLC - MT 650   2020-07-26   
406-284 1 Manhattan MT BLNGMTMALMD  994E BANDWIDTH.COM CLEC, LLC - MT 650   2014-03-31   
406-284 2 Manhattan MT BZMNMTEFPS0  008E BRESNAN BROADBAND OF MONTANA, LLC - MT [CHARTER] 650   2005-06-17   
406-284 3 Manhattan MT MNHTMTMARS1  9636 QWEST CORPORATION 650      
406-284 4 Manhattan MT MNHTMTMARS1  9636 QWEST CORPORATION 650      
406-284 5 Manhattan MT BLNGMTMALMD  994E BANDWIDTH.COM CLEC, LLC - MT 650   2015-06-05   
406-284 6 Manhattan MT MNHTMTMARS1  9636 QWEST CORPORATION 650      
406-284 7 Manhattan MT BLNGMTAS9MD  453F ONVOY, LLC - MT 650   2007-03-19   
406-284 8 Manhattan MT BLNGMTAS9MD  453F ONVOY, LLC - MT 650   2011-10-24   
406-284 9 Manhattan MT MNHTMTMARS1  9636 QWEST CORPORATION 650      

Last updated: Tue, 16 Apr 2024 01:38:01 UTC

Sponsored by: FiberConX Communications Ltd.

Like this site? We accept donations via PayPal.