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: 260

NPA-NXX BLOCK Rate Centre Region Switch OCN LATA LIR Eff date Disc date
406-260 A Kalispell MT MSSLMTAG5MD  6010 NEW CINGULAR WIRELESS PCS, LLC 648      
406-260 0 Kalispell MT MSSLMTAG5MD  6010 NEW CINGULAR WIRELESS PCS, LLC 648      
406-260 1 Kalispell MT HLNAMTMAX1X  6564 CELLCO PARTNERSHIP DBA VERIZON WIRELESS - MT 648   2008-01-08   
406-260 2 Kalispell MT HLNAMTMAX1X  6564 CELLCO PARTNERSHIP DBA VERIZON WIRELESS - MT 648   2008-01-08   
406-260 3 Kalispell MT HLNAMTMAX1X  6564 CELLCO PARTNERSHIP DBA VERIZON WIRELESS - MT 648   2008-01-08   
406-260 4 Kalispell MT KLSLMTAZDS0  008E BRESNAN BROADBAND OF MONTANA, LLC - MT [CHARTER] 648   2008-06-17   
406-260 5 Kalispell MT HLNAMTMAX1X  6564 CELLCO PARTNERSHIP DBA VERIZON WIRELESS - MT 648   2008-07-10   
406-260 6 Kalispell MT HLNAMTMAX1X  6564 CELLCO PARTNERSHIP DBA VERIZON WIRELESS - MT 648   2008-08-11   
406-260 7 Kalispell MT HLNAMTMAX1X  6564 CELLCO PARTNERSHIP DBA VERIZON WIRELESS - MT 648   2008-09-22   
406-260 8 Kalispell MT HLNAMTMAX1X  6564 CELLCO PARTNERSHIP DBA VERIZON WIRELESS - MT 648   2008-10-20   
406-260 9 Kalispell MT MSSLMTMACMD  6529 T-MOBILE USA, INC. 648   2022-10-08   

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

Sponsored by: LES.NET

Like this site? We accept donations via PayPal.