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.

Huntley, MT

NPA-NXX BLOCK Switch OCN LATA LIR Eff date Disc date
406-348 A HNTLMTXCRS1  2250 PROJECT TEL. CO., INC. 650      
406-348 0   2250 PROJECT TEL. CO., INC. 650      
406-348 1   9415 LEVEL 3 COMMUNICATIONS, LLC - MT 650   2025-03-06   
406-348 2   2250 PROJECT TEL. CO., INC. 650      
406-348 3   2250 PROJECT TEL. CO., INC. 650      
406-348 4   2250 PROJECT TEL. CO., INC. 650      
406-348 5   792K CHARTER IP ENABLED SERVICES, LLC 650   2025-04-08   
406-348 6   2250 PROJECT TEL. CO., INC. 650      
406-348 7   2250 PROJECT TEL. CO., INC. 650      
406-348 8   2250 PROJECT TEL. CO., INC. 650      
406-348 9   2250 PROJECT TEL. CO., INC. 650      

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

Sponsored by: Callcentric - VoIP Internet phone service

Like this site? We accept donations via PayPal.