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   081F BANDWIDTH.COM CLEC, LLC - WY 640   2012-08-18   
307-312 1   081F BANDWIDTH.COM CLEC, LLC - WY 640   2012-08-21   
307-312 2   450F ONVOY, LLC - WY 640   2017-04-20   
307-312 3   450F ONVOY, LLC - WY 640   2018-11-12   
307-312 4   450F ONVOY, LLC - WY 640   2019-09-07   
307-312 5   450F ONVOY, LLC - WY 640   2019-09-07   
307-312 6   450F ONVOY, LLC - WY 640   2020-02-23   
307-312 7   508J CENTURYLINK COMMUNICATIONS LLC 640   2017-06-08   
307-312 8   073H TELNYX LLC 640   2019-02-28   
307-312 9   450F ONVOY, LLC - WY 640   2020-06-04   
307-407 A SXFLSDCOTMD  450F ONVOY, LLC - WY 640      
307-407 3   450F ONVOY, LLC - WY 640   2020-10-10   
307-407 4   450F ONVOY, LLC - WY 640   2020-10-10   
307-407 6   450F ONVOY, LLC - WY 640   2021-03-02   
307-407 7   450F ONVOY, LLC - WY 640   2021-03-02   
307-643 A SPRFSDCORS1  9631 QWEST CORPORATION 640      

Last updated: Sun, 04 Apr 2021 19:28:27 UTC

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