Local Calling Guide

Area code/prefix search

Search area code/prefix (NPA/NXX)
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NPA: 605 [Rate centres in NPA 605] [Dial plan for NPA 605]

NXX: 644

NPA-NXX BLOCK Rate Centre Region Switch OCN LATA LIR Eff date Disc date
605-644 A Spearfish SD SPRFSDCORS1  9631 QWEST CORPORATION 640      
605-644 0 Spearfish SD SPRFSDCORS1  9631 QWEST CORPORATION 640      
605-644 1 Spearfish SD SPRFSDCORS1  9631 QWEST CORPORATION 640      
605-644 2 Spearfish SD SPRFSDCORS1  9631 QWEST CORPORATION 640      
605-644 3 Spearfish SD SPRFSDCORS1  9631 QWEST CORPORATION 640      
605-644 4 Spearfish SD SPRFSDCORS1  9631 QWEST CORPORATION 640      
605-644 5 Spearfish SD SXFLSDCOTMD  162G ONVOY, LLC - SD 640   2009-05-28   
605-644 6 Spearfish SD SXFLSDCHIMD  106F BANDWIDTH.COM CLEC, LLC - SD 640   2008-11-29   
605-644 7 Spearfish SD SXFLSDCORMD  5180 LEVEL 3 COMMUNICATIONS, LLC - SD 640   2005-01-30   
605-644 8 Spearfish SD SPRFSDCORS1  9631 QWEST CORPORATION 640      
605-644 9 Spearfish SD SPRFSDCORS1  9631 QWEST CORPORATION 640      

Last updated: Sun, 26 Jan 2025 15:59:20 UTC

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