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: KEENNDXADS0

NPA-NXX BLOCK Rate Centre Region OCN LATA LIR Eff date Disc date
406-569 A West Homesteaders Gap MT 1632 RESERVATION TEL. COOP. 638      
701-444 A Watford City ND 1632 RESERVATION TEL. COOP. 638      
701-565 A Homesteaders Gap ND 1632 RESERVATION TEL. COOP. 638      
701-586 A Arnegard ND 1632 RESERVATION TEL. COOP. 638      
701-627 A New Town ND 1632 RESERVATION TEL. COOP. 638      
701-675 A Keene ND 1632 RESERVATION TEL. COOP. 638      
701-759 A Mandaree ND 1632 RESERVATION TEL. COOP. 638      
701-828 A Alexander ND 1632 RESERVATION TEL. COOP. 638      
701-842 A Watford City ND 1632 RESERVATION TEL. COOP. 638      

Last updated: Thu, 20 Nov 2025 13:34:34 UTC

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