Local Calling Guide

Area code/prefix search

Search area code/prefix (NPA/NXX)
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West Spearfish, WY

NPA-NXX BLOCK Switch OCN LATA LIR Eff date Disc date
307-312 A SXFLSDCHIMD  081F BANDWIDTH.COM CLEC, LLC - WY 640      
307-312 0 SXFLSDCHIMD  081F BANDWIDTH.COM CLEC, LLC - WY 640   2012-08-18   
307-312 1 SXFLSDCHIMD  081F BANDWIDTH.COM CLEC, LLC - WY 640   2012-08-21   
307-312 2 SXFLSDCOTMD  450F ONVOY, LLC - WY 640   2017-04-20   
307-312 3 SXFLSDCOTMD  450F ONVOY, LLC - WY 640   2018-11-12   
307-312 4 SXFLSDCOTMD  450F ONVOY, LLC - WY 640   2019-09-07   
307-312 5 SXFLSDCOTMD  450F ONVOY, LLC - WY 640   2019-09-07   
307-312 6 SXFLSDCOTMD  450F ONVOY, LLC - WY 640   2020-02-23   
307-312 7 SXFLSDCOLMD  508J CENTURYLINK COMMUNICATIONS, LLC 640   2017-06-08   
307-312 8 SXFLSDPS0MD  073H TELNYX LLC 640   2019-02-28   
307-312 9 SXFLSDCOTMD  450F ONVOY, LLC - WY 640   2020-06-04   
307-407 A SXFLSDCOTMD  450F ONVOY, LLC - WY 640      
307-407 0 SXFLSDCORMD  9416 LEVEL 3 COMMUNICATIONS, LLC - WY 640   2023-01-27   
307-407 1 SXFLSDCOTMD  450F ONVOY, LLC - WY 640   2021-07-11   
307-407 2 SXFLSDCOX0X  624H ONVOY SPECTRUM, LLC 640   2022-01-08   
307-407 3 SXFLSDCOTMD  450F ONVOY, LLC - WY 640   2020-10-10   
307-407 4 SXFLSDCOTMD  450F ONVOY, LLC - WY 640   2020-10-10   
307-407 5 SXFLSDCOX0X  624H ONVOY SPECTRUM, LLC 640   2021-07-18   
307-407 6 SXFLSDCOTMD  450F ONVOY, LLC - WY 640   2021-03-02   
307-407 7 SXFLSDCOTMD  450F ONVOY, LLC - WY 640   2021-03-02   
307-407 8 SXFLSDCOTMD  450F ONVOY, LLC - WY 640   2021-08-27   
307-407 9 SXFLSDCOX0X  624H ONVOY SPECTRUM, LLC 640   2021-10-30   
307-446 A SXFLSDCOTMD  450F ONVOY, LLC - WY 640      
307-446 1 SXFLSDCOTMD  450F ONVOY, LLC - WY 640   2023-07-23   
307-643 A SPRFSDCORS1  9631 QWEST CORPORATION 640      

Last updated: Sun, 26 Jan 2025 15:59:20 UTC

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