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.

North Havre, MT

NPA-NXX BLOCK Switch OCN LATA LIR Eff date Disc date
406-394 A HAVRMTXCDS0  2257 TRIANGLE TEL. COOP. ASSN., INC. 648      
406-394 0 HAVRMTXCDS0  2257 TRIANGLE TEL. COOP. ASSN., INC. 648      
406-394 1 HAVRMTXCDS0  2257 TRIANGLE TEL. COOP. ASSN., INC. 648      
406-394 2 HAVRMTXCDS0  2257 TRIANGLE TEL. COOP. ASSN., INC. 648      
406-394 3 HAVRMTXCDS0  2257 TRIANGLE TEL. COOP. ASSN., INC. 648      
406-394 4 HAVRMTXCDS0  2257 TRIANGLE TEL. COOP. ASSN., INC. 648      
406-394 5 HAVRMTXCDS0  2257 TRIANGLE TEL. COOP. ASSN., INC. 648      
406-394 6 MSSLMTMA0MD  9415 LEVEL 3 COMMUNICATIONS, LLC - MT 648      
406-394 7 HAVRMTXCDS0  2257 TRIANGLE TEL. COOP. ASSN., INC. 648      
406-394 8 HAVRMTXCDS0  2257 TRIANGLE TEL. COOP. ASSN., INC. 648      
406-394 9 HAVRMTXCDS0  2257 TRIANGLE TEL. COOP. ASSN., INC. 648      
406-398 A HAVRMTXCDS0  2257 TRIANGLE TEL. COOP. ASSN., INC. 648      
406-398 1 HAVRMTXCDS0  2257 TRIANGLE TEL. COOP. ASSN., INC. 648      
406-398 5 HAVRMTXCDS0  2257 TRIANGLE TEL. COOP. ASSN., INC. 648      
406-398 9 HAVRMTXCDS0  2257 TRIANGLE TEL. COOP. ASSN., INC. 648      

Last updated: Wed, 20 Nov 2024 21:20:06 UTC

Sponsored by: LES.NET

Like this site? We accept donations via PayPal.