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: 909

NPA-NXX BLOCK Rate Centre Region Switch OCN LATA LIR Eff date Disc date
605-909 A Hill City SD SXFLSDPSCMD  516J TON80 COMMUNICATIONS, LLC 640      
605-909 0 Hill City SD SXFLSDPSCMD  516J TON80 COMMUNICATIONS, LLC 640   2022-05-10   
605-909 1 Hill City SD SXFLSDCOX2X  073H TELNYX LLC 640   2022-05-11   
605-909 2 Hill City SD SXFLSDCOTMD  162G ONVOY, LLC - SD 640   2023-08-20   
605-909 3 Hill City SD   6701 AERIAL COMMUNICATIONS, INC. 640   2025-07-18   
605-909 4 Hill City SD   6701 AERIAL COMMUNICATIONS, INC. 640   2025-07-18   
605-909 5 Hill City SD   6701 AERIAL COMMUNICATIONS, INC. 640   2025-03-27   
605-909 6 Hill City SD   6701 AERIAL COMMUNICATIONS, INC. 640   2025-09-15   
605-909 7 Hill City SD   6701 AERIAL COMMUNICATIONS, INC. 640   2025-06-23   
605-909 8 Hill City SD SXFLSDCOTMD  162G ONVOY, LLC - SD 640   2022-11-12   
605-909 9 Hill City SD   6701 AERIAL COMMUNICATIONS, INC. 640   2025-09-15   

Last updated: Thu, 16 Oct 2025 03:04:18 UTC

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