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: 680

NPA-NXX BLOCK Rate Centre Region Switch OCN LATA LIR Eff date Disc date
406-680 A Malta MT MALTMTXC1MD  443B SAGEBRUSH CELLULAR, INC. 648      
406-680 0 Malta MT HLNAMTHHPS1  008E BRESNAN BROADBAND OF MONTANA, LLC - MT [CHARTER] 648   2021-04-23   
406-680 2 Malta MT HLNAMTMAX1X  6564 CELLCO PARTNERSHIP DBA VERIZON WIRELESS - MT 648   2023-01-06   
406-680 7 Malta MT MALTMTXC1MD  443B SAGEBRUSH CELLULAR, INC. 648      
406-680 9 Malta MT MALTMTXC1MD  443B SAGEBRUSH CELLULAR, INC. 648      

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

Sponsored by: Execulink Telecom

Like this site? We accept donations via PayPal.