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

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      
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      
406-434 7 SHLBMTMADS0  9636 QWEST CORPORATION 648      
406-434 8 GRFLMTMA7MD  453F ONVOY, LLC - MT 648      
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      
406-470 2 HLNAMTMAX1X  6564 CELLCO PARTNERSHIP DBA VERIZON WIRELESS - MT 648      
406-470 4 HLNAMTMAX1X  6564 CELLCO PARTNERSHIP DBA VERIZON WIRELESS - MT 648      
406-470 6 HLNAMTMAX1X  6564 CELLCO PARTNERSHIP DBA VERIZON WIRELESS - MT 648      
406-470 7 GRFLMTMA7MD  453F ONVOY, LLC - MT 648      
406-470 8 GRFLMTMA7MD  453F ONVOY, LLC - MT 648      
406-470 9 GRFLMTMA7MD  453F ONVOY, LLC - MT 648      
406-597 A MSSLMTAG5MD  6010 NEW CINGULAR WIRELESS PCS, LLC 648      
406-597 6 GRFLMTMA7MD  453F ONVOY, LLC - MT 648      
406-597 8 GRFLMTMA7MD  453F ONVOY, LLC - MT 648      
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      
406-966 2 GRFLMTMA7MD  453F ONVOY, LLC - MT 648      
406-966 3 HLNAMTMAMMD  7229 MCIMETRO ACCESS TRANSMISSION SERVICES LLC 648      
406-966 4 MSSLMTMA0MD  9415 LEVEL 3 COMMUNICATIONS, LLC - MT 648      
406-966 5 GRFLMTMA7MD  453F ONVOY, LLC - MT 648      
406-966 6 GRFLMTMA7MD  453F ONVOY, LLC - MT 648      
406-966 7 HLNAMTMAUMD  508J CENTURYLINK COMMUNICATIONS, LLC 648      

Last updated: Wed, 20 Nov 2024 21:20:06 UTC

Sponsored by: Callcentric - VoIP Internet phone service

Like this site? We accept donations via PayPal.