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.

OCN: 452F ONVOY, LLC - ND

<< 1 2 3 4 5 6

NPA-NXX BLOCK Rate Centre Region Switch LATA LIR Eff date Disc date
701-987 3 Thompson ND FARGNDBCX7X  636   2021-02-12   
701-987 4 Thompson ND FARGNDBCX7X  636   2020-12-11   
701-987 5 Thompson ND FARGNDBCX7X  636   2020-12-11   
701-987 6 Thompson ND FARGNDBCX7X  636   2020-10-23   
701-987 7 Thompson ND FARGNDBCX7X  636   2019-10-11   
701-987 8 Thompson ND FARGNDBCX7X  636   2020-05-14   
701-987 9 Thompson ND FARGNDBCX7X  636   2021-02-12   
701-997 7 Fargo ND FARGNDBCX7X  636   2019-09-06   
701-997 8 Fargo ND FARGNDBCX7X  636   2019-09-06   
701-999 1 Belfield ND BSMRNDBCSMD  638   2024-01-06   
701-999 3 Belfield ND BSMRNDBCSMD  638   2019-09-06   
701-999 4 Belfield ND BSMRNDBCSMD  638   2019-09-06   
701-999 5 Belfield ND BSMRNDBCSMD  638   2020-12-11   
701-999 6 Belfield ND BSMRNDBCSMD  638   2020-08-20   

<< 1 2 3 4 5 6

Last updated: Sun, 17 May 2026 03:26:51 UTC

Sponsored by: VoIP Much Phone Company

Like this site? We accept donations via PayPal.