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: 605 [Rate centres in NPA 605] [Dial plan for NPA 605]

NXX: 599

NPA-NXX BLOCK Rate Centre Region Switch OCN LATA LIR Eff date Disc date
605-599 A Cavour SD CAVRSDCORS1  9631 QWEST CORPORATION 640      
605-599 0 Cavour SD CAVRSDCORS1  9631 QWEST CORPORATION 640      
605-599 1 Cavour SD SXFLSDCOTMD  162G ONVOY, LLC - SD 640   2012-12-19   
605-599 2 Cavour SD CAVRSDCORS1  9631 QWEST CORPORATION 640      
605-599 3 Cavour SD SXFLSDCOTMD  162G ONVOY, LLC - SD 640   2019-09-13   
605-599 4 Cavour SD SXFLSDPS0MD  073H TELNYX LLC 640   2019-09-29   
605-599 5 Cavour SD SXFLSDCOLMD  508J CENTURYLINK COMMUNICATIONS, LLC 640   2017-06-07   
605-599 6 Cavour SD SXFLSDCOTMD  162G ONVOY, LLC - SD 640   2013-12-18   
605-599 7 Cavour SD SXFLSDCOTMD  162G ONVOY, LLC - SD 640   2009-07-13   
605-599 8 Cavour SD SXFLSDCOTMD  162G ONVOY, LLC - SD 640   2012-02-23   
605-599 9 Cavour SD SXFLSDCOTMD  162G ONVOY, LLC - SD 640   2013-12-18   

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

Sponsored by: ISP Telecom

Like this site? We accept donations via PayPal.