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: FARGNDBCXDY

NPA-NXX BLOCK Rate Centre Region OCN LATA LIR Eff date Disc date
218-207 7 East Grand Forks MN 490J BOOST SUBSCRIBERCO L.L.C. 636   2023-06-11   
218-620 A Moorhead MN 490J BOOST SUBSCRIBERCO L.L.C. 636      
218-620 0 Moorhead MN 490J BOOST SUBSCRIBERCO L.L.C. 636   2023-06-19   
701-517 A Grand Forks ND 490J BOOST SUBSCRIBERCO L.L.C. 636      
701-517 9 Grand Forks ND 490J BOOST SUBSCRIBERCO L.L.C. 636   2023-06-11   
701-970 6 Fargo ND 490J BOOST SUBSCRIBERCO L.L.C. 636   2023-06-11   

Last updated: Wed, 04 Mar 2026 03:00:52 UTC

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