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: 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   9631 QWEST CORPORATION 640      
605-599 1 Cavour SD   162G ONVOY, LLC - SD 640   2012-12-19   
605-599 2 Cavour SD   9631 QWEST CORPORATION 640      
605-599 3 Cavour SD   162G ONVOY, LLC - SD 640   2019-09-13   
605-599 4 Cavour SD   073H TELNYX LLC 640   2019-09-29   
605-599 5 Cavour SD   508J CENTURYLINK COMMUNICATIONS, LLC 640   2017-06-07   
605-599 6 Cavour SD   162G ONVOY, LLC - SD 640   2013-12-18   
605-599 7 Cavour SD   162G ONVOY, LLC - SD 640   2009-07-13   
605-599 8 Cavour SD   162G ONVOY, LLC - SD 640   2012-02-23   
605-599 9 Cavour SD   162G ONVOY, LLC - SD 640   2013-12-18   

Last updated: Tue, 13 Jan 2026 21:50:02 UTC

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