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.
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Worden, MT

NPA-NXX BLOCK Switch OCN LATA LIR Eff date Disc date
406-967 A WRDNMTXCDS0  2250 PROJECT TEL. CO., INC. 650      
406-967 0   2250 PROJECT TEL. CO., INC. 650      
406-967 1   792K CHARTER IP ENABLED SERVICES, LLC 650   2025-05-06   
406-967 2   2250 PROJECT TEL. CO., INC. 650      
406-967 3   2250 PROJECT TEL. CO., INC. 650      
406-967 4   2250 PROJECT TEL. CO., INC. 650      
406-967 5   9415 LEVEL 3 COMMUNICATIONS, LLC - MT 650   2025-04-07   
406-967 6   2250 PROJECT TEL. CO., INC. 650      
406-967 7   2250 PROJECT TEL. CO., INC. 650      
406-967 8   2250 PROJECT TEL. CO., INC. 650      
406-967 9   2250 PROJECT TEL. CO., INC. 650      

Last updated: Sat, 05 Apr 2025 03:03:23 UTC

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