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.

Shelby, MT

1 2 >>

NPA-NXX BLOCK Switch OCN LATA LIR Eff date Disc date
406-424 A SHLBMTALRL0  3924 3 RIVERS TELEPHONE COOPERATIVE, INC. - MT 648      
406-424 0 GRFLMTMAHMD  073H TELNYX LLC 648   2020-08-13   
406-424 1 SHLBMTALRL0  3924 3 RIVERS TELEPHONE COOPERATIVE, INC. - MT 648      
406-424 2 SHLBMTALRL0  3924 3 RIVERS TELEPHONE COOPERATIVE, INC. - MT 648      
406-424 4 SHLBMTALRL0  3924 3 RIVERS TELEPHONE COOPERATIVE, INC. - MT 648      
406-424 5 SHLBMTALRL0  3924 3 RIVERS TELEPHONE COOPERATIVE, INC. - MT 648      
406-424 7 SHLBMTALRL0  3924 3 RIVERS TELEPHONE COOPERATIVE, INC. - MT 648      
406-424 8 SHLBMTALRL0  3924 3 RIVERS TELEPHONE COOPERATIVE, INC. - MT 648      
406-424 9 SHLBMTALRL0  3924 3 RIVERS TELEPHONE COOPERATIVE, INC. - MT 648      
406-434 A SHLBMTMADS0  9636 QWEST CORPORATION 648      
406-434 2 SHLBMTMADS0  9636 QWEST CORPORATION 648      
406-434 3 SHLBMTMADS0  9636 QWEST CORPORATION 648      
406-434 5 SHLBMTMADS0  9636 QWEST CORPORATION 648      
406-434 6 MSSLMTMA0MD  9415 LEVEL 3 COMMUNICATIONS, LLC - MT 648   2005-02-21   
406-434 7 SHLBMTMADS0  9636 QWEST CORPORATION 648      
406-434 8 GRFLMTMA7MD  453F ONVOY, LLC - MT 648   2007-03-09   
406-434 9 SHLBMTMADS0  9636 QWEST CORPORATION 648      
406-450 A HLNAMTMAX1X  6564 CELLCO PARTNERSHIP DBA VERIZON WIRELESS - MT 648      
406-450 0 HLNAMTMAX1X  6564 CELLCO PARTNERSHIP DBA VERIZON WIRELESS - MT 648      
406-450 1 HLNAMTMAX1X  6564 CELLCO PARTNERSHIP DBA VERIZON WIRELESS - MT 648      
406-450 2 HLNAMTMAX1X  6564 CELLCO PARTNERSHIP DBA VERIZON WIRELESS - MT 648      
406-450 3 HLNAMTMAX1X  6564 CELLCO PARTNERSHIP DBA VERIZON WIRELESS - MT 648      
406-450 4 HLNAMTMAX1X  6564 CELLCO PARTNERSHIP DBA VERIZON WIRELESS - MT 648      
406-450 5 HLNAMTMAX1X  6564 CELLCO PARTNERSHIP DBA VERIZON WIRELESS - MT 648      
406-450 6 HLNAMTMAX1X  6564 CELLCO PARTNERSHIP DBA VERIZON WIRELESS - MT 648      
406-450 8 HLNAMTMAX1X  6564 CELLCO PARTNERSHIP DBA VERIZON WIRELESS - MT 648      
406-460 A MSSLMTAG5MD  6010 NEW CINGULAR WIRELESS PCS, LLC 648      
406-460 0 MSSLMTAG5MD  6010 NEW CINGULAR WIRELESS PCS, LLC 648      
406-460 1 MSSLMTAG5MD  6010 NEW CINGULAR WIRELESS PCS, LLC 648      
406-460 2 MSSLMTAG5MD  6010 NEW CINGULAR WIRELESS PCS, LLC 648      
406-470 A HLNAMTMAX1X  6564 CELLCO PARTNERSHIP DBA VERIZON WIRELESS - MT 648      
406-470 0 HLNAMTMAX1X  6564 CELLCO PARTNERSHIP DBA VERIZON WIRELESS - MT 648      
406-470 1 HLNAMTMAX1X  6564 CELLCO PARTNERSHIP DBA VERIZON WIRELESS - MT 648   2008-10-16   
406-470 2 HLNAMTMAX1X  6564 CELLCO PARTNERSHIP DBA VERIZON WIRELESS - MT 648   2010-01-20   
406-470 4 HLNAMTMAX1X  6564 CELLCO PARTNERSHIP DBA VERIZON WIRELESS - MT 648   2009-04-09   
406-470 6 HLNAMTMAX1X  6564 CELLCO PARTNERSHIP DBA VERIZON WIRELESS - MT 648   2011-02-06   
406-470 7 GRFLMTMA7MD  453F ONVOY, LLC - MT 648   2011-09-30   
406-470 8 GRFLMTMA7MD  453F ONVOY, LLC - MT 648   2019-10-28   
406-470 9 GRFLMTMA7MD  453F ONVOY, LLC - MT 648   2021-07-05   
406-597 A MSSLMTAG5MD  6010 NEW CINGULAR WIRELESS PCS, LLC 648      
406-597 6 GRFLMTMA7MD  453F ONVOY, LLC - MT 648   2019-09-15   
406-597 8 GRFLMTMA7MD  453F ONVOY, LLC - MT 648   2023-06-02   
406-966 A MSSLMTMA0MD  9415 LEVEL 3 COMMUNICATIONS, LLC - MT 648      
406-966 0 MSSLMTMA0MD  9415 LEVEL 3 COMMUNICATIONS, LLC - MT 648      
406-966 1 GRFLMTMA7MD  453F ONVOY, LLC - MT 648   2012-12-17   
406-966 2 GRFLMTMA7MD  453F ONVOY, LLC - MT 648   2012-12-17   
406-966 3 HLNAMTMAMMD  7229 MCIMETRO ACCESS TRANSMISSION SERVICES LLC 648   2014-03-14   
406-966 4 MSSLMTMA0MD  9415 LEVEL 3 COMMUNICATIONS, LLC - MT 648      
406-966 5 GRFLMTMA7MD  453F ONVOY, LLC - MT 648   2021-03-07   
406-966 6 GRFLMTMA7MD  453F ONVOY, LLC - MT 648   2021-03-07   

1 2 >>

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

Sponsored by: BeeVox - Whitelabel Reseller Platform

Like this site? We accept donations via PayPal.