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.

Miller, SD

NPA-NXX BLOCK Switch OCN LATA LIR Eff date Disc date
605-204 A SXFLSDCONMD  6534 NEW CINGULAR WIRELESS PCS, LLC - IL 640      
605-204 0 SXFLSDCONMD  6534 NEW CINGULAR WIRELESS PCS, LLC - IL 640      
605-204 1 SXFLSDPS0MD  073H TELNYX LLC 640   2020-01-20   
605-204 2 SXFLSDCONMD  6534 NEW CINGULAR WIRELESS PCS, LLC - IL 640   2013-05-02   
605-204 3 SXFLSDCOTMD  162G ONVOY, LLC - SD 640   2012-12-19   
605-204 4 SXFLSDPS0MD  073H TELNYX LLC 640   2019-09-29   
605-204 5 SXFLSDCHIMD  106F BANDWIDTH.COM CLEC, LLC - SD 640   2013-12-14   
605-204 6 SXFLSDCHIMD  106F BANDWIDTH.COM CLEC, LLC - SD 640   2015-07-24   
605-204 7 SXFLSDCOTMD  162G ONVOY, LLC - SD 640   2013-12-18   
605-204 8 SXFLSDCOTMD  162G ONVOY, LLC - SD 640   2013-12-18   
605-204 9 SXFLSDCHIMD  106F BANDWIDTH.COM CLEC, LLC - SD 640   2017-06-04   
605-453 A SXFLSDCOX9X  6569 CELLCO PARTNERSHIP DBA VERIZON WIRELESS - SD 640      
605-453 0 SXFLSDCOX9X  6569 CELLCO PARTNERSHIP DBA VERIZON WIRELESS - SD 640   2017-02-23   
605-453 1 SXFLSDCHIMD  106F BANDWIDTH.COM CLEC, LLC - SD 640   2018-06-09   
605-453 2 SXFLSDCHIMD  106F BANDWIDTH.COM CLEC, LLC - SD 640   2018-07-27   
605-453 3 SXFLSDCOTMD  162G ONVOY, LLC - SD 640   2019-11-07   
605-453 4 SXFLSDCOTMD  162G ONVOY, LLC - SD 640   2020-08-21   
605-453 5 SXFLSDCOTMD  162G ONVOY, LLC - SD 640   2019-09-13   
605-453 6 SXFLSDCOTMD  162G ONVOY, LLC - SD 640   2020-08-21   
605-453 7 SXFLSDCOTMD  162G ONVOY, LLC - SD 640   2020-10-23   
605-453 8 SXFLSDCOTMD  162G ONVOY, LLC - SD 640   2020-12-07   
605-453 9 SXFLSDCOXWX  506J TWILIO INTERNATIONAL, INC. 640   2021-02-22   
605-853 A MLLRSDCORS1  9631 QWEST CORPORATION 640      
605-853 0 MLLRSDCORS1  9631 QWEST CORPORATION 640      
605-853 2 MLLRSDCORS1  9631 QWEST CORPORATION 640      
605-853 3 MLLRSDCORS1  9631 QWEST CORPORATION 640      
605-853 4 SXFLSDCOQMD  7229 MCIMETRO ACCESS TRANSMISSION SERVICES LLC 640   2016-11-11   
605-853 5 SXFLSDCOTMD  162G ONVOY, LLC - SD 640   2011-10-28   
605-853 6 SXFLSDCOLMD  508J CENTURYLINK COMMUNICATIONS, LLC 640   2017-06-03   
605-853 7 SXFLSDCOTMD  162G ONVOY, LLC - SD 640   2009-05-28   
605-853 8 SXFLSDCOTMD  162G ONVOY, LLC - SD 640   2011-04-20   
605-853 9 MLLRSDCORS1  9631 QWEST CORPORATION 640      
605-893 A MLLRSD03GT0  7076 MIDCONTINENT COMMUNICATIONS. - SD 640      
605-998 A SXFLSDCOTMD  162G ONVOY, LLC - SD 640      
605-998 0 SXFLSDCOX1X  073H TELNYX LLC 640   2021-11-09   
605-998 1 SXFLSDCORMD  5180 LEVEL 3 COMMUNICATIONS, LLC - SD 640   2023-01-07   
605-998 2   6569 CELLCO PARTNERSHIP DBA VERIZON WIRELESS - SD 640   2024-03-28   
605-998 7 SXFLSDCOTMD  162G ONVOY, LLC - SD 640   2021-09-28   
605-998 8 SXFLSDCOTMD  162G ONVOY, LLC - SD 640   2021-09-27   
605-998 9 SXFLSDCOTMD  162G ONVOY, LLC - SD 640   2021-09-27   

Last updated: Tue, 16 Apr 2024 01:38:01 UTC

Sponsored by: Callcentric - VoIP Internet phone service

Like this site? We accept donations via PayPal.