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: BLNGMT93AMD

NPA-NXX BLOCK Rate Centre Region OCN LATA LIR Eff date Disc date
406-312 A Bozeman MT 478J NUSO, LLC 650      
406-312 2 Bozeman MT 478J NUSO, LLC 650   2020-07-17   
406-898 6 Bozeman MT 478J NUSO, LLC 650   2024-01-08   
701-505 A East Sidney ND 478J NUSO, LLC 650      
701-505 1 East Sidney ND 478J NUSO, LLC 650   2020-10-29   

Last updated: Fri, 22 Mar 2024 03:02:44 UTC

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