Local Calling Guide

Area code/prefix search

Search area code/prefix (NPA/NXX)
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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   792K CHARTER IP ENABLED SERVICES, LLC 648   2021-04-23   
406-680 2 Malta MT   6564 CELLCO PARTNERSHIP DBA VERIZON WIRELESS - MT 648   2023-01-06   
406-680 7 Malta MT   443B SAGEBRUSH CELLULAR, INC. 648      
406-680 9 Malta MT   443B SAGEBRUSH CELLULAR, INC. 648      

Last updated: Tue, 13 Jan 2026 21:50:02 UTC

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