Local Calling Guide

Area code/prefix search

Search area code/prefix (NPA/NXX)
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NPA: 307 [Rate centres in NPA 307] [Dial plan for NPA 307]

NXX: 312

NPA-NXX BLOCK Rate Centre Region Switch OCN LATA LIR Eff date Disc date
307-312 A West Spearfish WY SXFLSDCHIMD  081F BANDWIDTH.COM CLEC, LLC - WY 640      
307-312 0 West Spearfish WY   081F BANDWIDTH.COM CLEC, LLC - WY 640   2012-08-18   
307-312 1 West Spearfish WY   081F BANDWIDTH.COM CLEC, LLC - WY 640   2012-08-21   
307-312 2 West Spearfish WY   450F ONVOY, LLC - WY 640   2017-04-20   
307-312 3 West Spearfish WY   450F ONVOY, LLC - WY 640   2018-11-12   
307-312 4 West Spearfish WY   450F ONVOY, LLC - WY 640   2019-09-07   
307-312 5 West Spearfish WY   450F ONVOY, LLC - WY 640   2019-09-07   
307-312 6 West Spearfish WY   450F ONVOY, LLC - WY 640   2020-02-23   
307-312 7 West Spearfish WY   508J CENTURYLINK COMMUNICATIONS LLC 640   2017-06-08   
307-312 8 West Spearfish WY   073H TELNYX LLC 640   2019-02-28   
307-312 9 West Spearfish WY   450F ONVOY, LLC - WY 640   2020-06-04   

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

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