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: 280D ALLIANCE COMMUNICATIONS COOPERATIVE, INC. - SD

NPA-NXX BLOCK Rate Centre Region Switch LATA LIR Eff date Disc date
507-755 A East Valley Springs MN VYSPSDXA755  620      
605-474 A North Larchwood SD LRWDIAXO474  640      
605-757 A Valley Springs SD BRNDSDXA582  640      

Last updated: Wed, 20 Nov 2024 21:20:06 UTC

Sponsored by: FiberConX Communications Ltd.

Like this site? We accept donations via PayPal.