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.
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OCN: 424F NATIVE AMERICAN TELECOM, LLC - SD

NPA-NXX BLOCK Rate Centre Region Switch LATA LIR Eff date Disc date
605-417 A Fort Thompson SD   640      
605-417 0 Fort Thompson SD   640   2017-05-04   
605-417 1 Fort Thompson SD   640   2017-05-04   
605-417 2 Fort Thompson SD   640   2017-05-04   
605-417 3 Fort Thompson SD   640   2017-05-04   
605-417 4 Fort Thompson SD   640   2017-05-04   
605-417 5 Fort Thompson SD   640   2017-05-04   
605-417 6 Fort Thompson SD   640   2017-05-04   
605-417 7 Fort Thompson SD   640   2017-05-04   
605-417 8 Fort Thompson SD   640   2017-05-04   
605-417 9 Fort Thompson SD   640   2017-05-04   
605-477 A Fort Thompson SD FTTHSDXADS2  640   2009-08-09   

Last updated: Tue, 31 Dec 2019 02:37:20 UTC

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