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.

Switch: BSMRNDJCNMD

NPA-NXX BLOCK Rate Centre Region OCN LATA LIR Eff date Disc date
701-278 9 Rolla ND 145J TERRA NOVA TELECOM INC. 638   2026-03-15   
701-329 1 Linton ND 145J TERRA NOVA TELECOM INC. 638   2026-03-15   
701-341 8 Harvey ND 145J TERRA NOVA TELECOM INC. 638   2026-03-15   
701-440 3 Bowman ND 145J TERRA NOVA TELECOM INC. 638   2026-03-15   
701-494 4 Hazen ND 145J TERRA NOVA TELECOM INC. 638   2025-07-06   
701-629 2 Stanley ND 145J TERRA NOVA TELECOM INC. 638   2026-03-15   
701-681 2 Rugby ND 145J TERRA NOVA TELECOM INC. 638   2026-03-15   
701-870 3 Beulah ND 145J TERRA NOVA TELECOM INC. 638   2026-03-15   
701-871 3 Bottineau ND 145J TERRA NOVA TELECOM INC. 638   2026-03-15   
701-877 A Bismarck ND 145J TERRA NOVA TELECOM INC. 638      
701-880 6 Hazen ND 145J TERRA NOVA TELECOM INC. 638   2026-03-15   
701-898 9 Parshall ND 145J TERRA NOVA TELECOM INC. 638   2026-03-29   

Last updated: Thu, 16 Jul 2026 02:21:55 UTC

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