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: SXFLSDCOTMD

<< 1 2 3 4 5 6 7 8 9 10 11 >>

NPA-NXX BLOCK Rate Centre Region OCN LATA LIR Eff date Disc date
605-640 4 McIntosh SD 162G ONVOY, LLC - SD 640   2020-10-23   
605-640 5 McIntosh SD 162G ONVOY, LLC - SD 640   2020-08-21   
605-640 6 McIntosh SD 162G ONVOY, LLC - SD 640   2020-08-21   
605-644 5 Spearfish SD 162G ONVOY, LLC - SD 640   2009-05-28   
605-646 1 Rapid City SD 162G ONVOY, LLC - SD 640   2011-10-12   
605-653 4 Yankton SD 162G ONVOY, LLC - SD 640   2011-07-05   
605-653 5 Yankton SD 162G ONVOY, LLC - SD 640   2012-12-16   
605-655 8 Yankton SD 162G ONVOY, LLC - SD 640   2009-05-28   
605-656 3 Mitchell SD 162G ONVOY, LLC - SD 640   2020-10-23   
605-656 4 Mitchell SD 162G ONVOY, LLC - SD 640   2024-04-14   
605-656 5 Mitchell SD 162G ONVOY, LLC - SD 640   2020-07-13   
605-656 7 Mitchell SD 162G ONVOY, LLC - SD 640   2020-07-13   
605-656 9 Mitchell SD 162G ONVOY, LLC - SD 640   2025-03-14   
605-657 A Watertown SD 162G ONVOY, LLC - SD 640      
605-657 0 Watertown SD 162G ONVOY, LLC - SD 640   2021-07-10   
605-657 4 Watertown SD 162G ONVOY, LLC - SD 640   2021-10-10   
605-657 6 Watertown SD 162G ONVOY, LLC - SD 640   2021-01-03   
605-657 7 Watertown SD 162G ONVOY, LLC - SD 640   2021-01-03   
605-659 7 Vermillion SD 162G ONVOY, LLC - SD 640   2012-01-30   
605-659 9 Vermillion SD 162G ONVOY, LLC - SD 640   2024-04-14   
605-663 2 Huron SD 162G ONVOY, LLC - SD 640   2021-06-27   
605-663 3 Huron SD 162G ONVOY, LLC - SD 640   2021-06-27   
605-663 5 Huron SD 162G ONVOY, LLC - SD 640   2022-08-25   
605-667 1 Harrisburg-Tea SD 162G ONVOY, LLC - SD 640   2020-10-23   
605-667 4 Harrisburg-Tea SD 162G ONVOY, LLC - SD 640   2020-08-21   
605-667 5 Harrisburg-Tea SD 162G ONVOY, LLC - SD 640   2020-08-21   
605-667 6 Harrisburg-Tea SD 162G ONVOY, LLC - SD 640   2019-11-07   
605-667 7 Harrisburg-Tea SD 162G ONVOY, LLC - SD 640   2019-11-07   
605-675 7 Vermillion SD 162G ONVOY, LLC - SD 640   2019-09-13   
605-677 0 Vermillion SD 162G ONVOY, LLC - SD 640   2020-12-07   
605-677 1 Vermillion SD 162G ONVOY, LLC - SD 640   2020-12-07   
605-677 2 Vermillion SD 162G ONVOY, LLC - SD 640   2019-07-08   
605-681 9 Sioux Falls SD 162G ONVOY, LLC - SD 640   2016-12-24   
605-699 4 Belle Fourche SD 162G ONVOY, LLC - SD 640   2020-10-23   
605-699 6 Belle Fourche SD 162G ONVOY, LLC - SD 640   2013-12-16   
605-699 7 Belle Fourche SD 162G ONVOY, LLC - SD 640   2012-01-23   
605-699 8 Belle Fourche SD 162G ONVOY, LLC - SD 640   2013-12-16   
605-702 A Sturgis SD 162G ONVOY, LLC - SD 640      
605-702 0 Sturgis SD 162G ONVOY, LLC - SD 640   2021-03-13   
605-702 2 Sturgis SD 162G ONVOY, LLC - SD 640   2020-08-20   
605-702 4 Sturgis SD 162G ONVOY, LLC - SD 640   2019-11-07   
605-702 5 Sturgis SD 162G ONVOY, LLC - SD 640   2019-11-07   
605-702 6 Sturgis SD 162G ONVOY, LLC - SD 640   2020-08-20   
605-702 7 Sturgis SD 162G ONVOY, LLC - SD 640   2019-09-13   
605-702 8 Sturgis SD 162G ONVOY, LLC - SD 640   2020-10-23   
605-702 9 Sturgis SD 162G ONVOY, LLC - SD 640   2020-12-07   
605-705 1 Sioux Falls SD 162G ONVOY, LLC - SD 640   2025-10-07   
605-705 3 Sioux Falls SD 162G ONVOY, LLC - SD 640   2019-11-07   
605-705 4 Sioux Falls SD 162G ONVOY, LLC - SD 640   2019-11-07   
605-705 6 Sioux Falls SD 162G ONVOY, LLC - SD 640   2019-11-07   

<< 1 2 3 4 5 6 7 8 9 10 11 >>

Last updated: Sat, 01 Aug 2026 03:19:33 UTC

Sponsored by: VoIP Much Phone Company

Like this site? We accept donations via PayPal.