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.

Dillon, MT

NPA-NXX BLOCK Switch OCN LATA LIR Eff date Disc date
406-596 A MSSLMTAG5MD  6010 NEW CINGULAR WIRELESS PCS, LLC 648      
406-596 0 HLNAMTMAX1X  6564 CELLCO PARTNERSHIP DBA VERIZON WIRELESS - MT 648      
406-596 1 HLNAMTMAX1X  6564 CELLCO PARTNERSHIP DBA VERIZON WIRELESS - MT 648      
406-596 2 HLNAMTMAX1X  6564 CELLCO PARTNERSHIP DBA VERIZON WIRELESS - MT 648      
406-596 5 HLNAMTMAX1X  6564 CELLCO PARTNERSHIP DBA VERIZON WIRELESS - MT 648      
406-660 A MSSLMTAG5MD  6010 NEW CINGULAR WIRELESS PCS, LLC 648      
406-660 0 MSSLMTAG5MD  6010 NEW CINGULAR WIRELESS PCS, LLC 648      
406-660 1 MSSLMTAG5MD  6010 NEW CINGULAR WIRELESS PCS, LLC 648      
406-660 2 MSSLMTAG5MD  6010 NEW CINGULAR WIRELESS PCS, LLC 648      
406-660 3 GRFLMTMA7MD  453F ONVOY, LLC - MT 648   2012-12-13   
406-660 4 GRFLMTMA7MD  453F ONVOY, LLC - MT 648   2012-12-13   
406-660 5 GRFLMTMA7MD  453F ONVOY, LLC - MT 648   2012-12-13   
406-660 6 GRFLMTMA7MD  453F ONVOY, LLC - MT 648   2012-12-13   
406-660 7 MSSLMTAG5MD  6010 NEW CINGULAR WIRELESS PCS, LLC 648   2014-07-17   
406-683 A DLLNMTMARS1  9636 QWEST CORPORATION 648      
406-865 A HLNAMTMAX1X  6564 CELLCO PARTNERSHIP DBA VERIZON WIRELESS - MT 648      
406-865 0 HLNAMTMAX1X  6564 CELLCO PARTNERSHIP DBA VERIZON WIRELESS - MT 648      
406-865 2 GRFLMTMA7MD  453F ONVOY, LLC - MT 648   2021-07-05   
406-865 3 HLNAMTMAMMD  7229 MCIMETRO ACCESS TRANSMISSION SERVICES LLC 648   2010-10-01   
406-865 4 GRFLMTMA7MD  453F ONVOY, LLC - MT 648   2021-07-05   
406-865 7 GRFLMTMA7MD  453F ONVOY, LLC - MT 648   2011-07-01   
406-865 8 GRFLMTMAHMD  073H TELNYX LLC 648   2020-08-07   
406-925 A HLNAMTMAX1X  6564 CELLCO PARTNERSHIP DBA VERIZON WIRELESS - MT 648      
406-925 0 HLNAMTMAX1X  6564 CELLCO PARTNERSHIP DBA VERIZON WIRELESS - MT 648      
406-925 1 HLNAMTMAX1X  6564 CELLCO PARTNERSHIP DBA VERIZON WIRELESS - MT 648      
406-925 2 HLNAMTMAX1X  6564 CELLCO PARTNERSHIP DBA VERIZON WIRELESS - MT 648      
406-925 3 HLNAMTMAX1X  6564 CELLCO PARTNERSHIP DBA VERIZON WIRELESS - MT 648      
406-925 5 HLNAMTHHPS1  008E BRESNAN BROADBAND OF MONTANA, LLC - MT [CHARTER] 648   2008-11-21   
406-925 6 MSSLMTMAYMD  771G TELEPORT COMMUNICATIONS AMERICA MT - LLC 648   2019-05-10   
406-925 7 HLNAMTMAUMD  508J CENTURYLINK COMMUNICATIONS, LLC 648   2014-06-02   
406-925 9 HLNAMTMAX1X  6564 CELLCO PARTNERSHIP DBA VERIZON WIRELESS - MT 648      
406-960 A MSSLMTMA0MD  9415 LEVEL 3 COMMUNICATIONS, LLC - MT 648      
406-960 0 MSSLMTMA0MD  9415 LEVEL 3 COMMUNICATIONS, LLC - MT 648      
406-960 4 MSSLMTMA0MD  9415 LEVEL 3 COMMUNICATIONS, LLC - MT 648      
406-988 A MSSLMTMA0MD  9415 LEVEL 3 COMMUNICATIONS, LLC - MT 648      
406-988 0 HLNAMTHHPS1  008E BRESNAN BROADBAND OF MONTANA, LLC - MT [CHARTER] 648   2006-03-24   
406-988 4 MSSLMTMA0MD  9415 LEVEL 3 COMMUNICATIONS, LLC - MT 648   2005-03-02   
406-988 6 GRFLMTMA7MD  453F ONVOY, LLC - MT 648   2021-03-07   
406-988 7 GRFLMTMA7MD  453F ONVOY, LLC - MT 648   2006-10-19   
406-988 8 GRFLMTMA7MD  453F ONVOY, LLC - MT 648   2021-03-07   

Last updated: Fri, 22 Mar 2024 03:02:44 UTC

Sponsored by: VoIP Much Phone Company

Like this site? We accept donations via PayPal.