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.


NPA-NXX BLOCK Rate Centre Region Switch LATA LIR Eff date Disc date
605-294 A Claremont SD CLMTSDXARS0  640      
605-298 A Andover SD ANDVSDXARS0  640      
605-329 A Frederick SD FRDRSDXARS3  640      
605-382 A Conde SD CONDSDXARS0  640      
605-395 A Ferney SD FRNYSDXARS0  640      
605-396 A Columbia SD CLMASDXARS0  640      
605-397 A Groton SD GRTNSDXADS0  640      
605-492 A Bristol SD BRSTSDXARS1  640      
605-635 A Doland SD DOLDSDXARS3  640      
605-885 A Houghton SD HGTNSDXARS0  640      
605-887 A Mellette SD MLLTSDXARS3  640      
605-897 A Turton SD TRTNSDXARS0  640      
605-994 A Hecla SD HECLSDXARS3  640      
701-992 A North Hecla ND HECLSDXARS3  640      

Last updated: Sat, 25 Feb 2023 02:10:49 UTC

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