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: BSMRNDJC0MD

NPA-NXX BLOCK Rate Centre Region OCN LATA LIR Eff date Disc date
701-299 A Bismarck ND 939H COMMIO, LLC 638      
701-299 9 Bismarck ND 939H COMMIO, LLC 638   2021-02-01   
701-504 A Dickinson ND 939H COMMIO, LLC 638      
701-504 0 Dickinson ND 939H COMMIO, LLC 638   2021-12-31   
701-504 1 Dickinson ND 939H COMMIO, LLC 638   2021-12-31   
701-578 9 Minot ND 939H COMMIO, LLC 638   2022-07-30   
701-981 8 Belfield ND 939H COMMIO, LLC 638   2022-09-05   

Last updated: Tue, 16 Apr 2024 01:38:01 UTC

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