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: 407

NPA-NXX BLOCK Rate Centre Region Switch OCN LATA LIR Eff date Disc date
307-407 A West Spearfish WY SXFLSDCOTMD  450F ONVOY, LLC - WY 640      
307-407 0 West Spearfish WY SXFLSDCORMD  9416 LEVEL 3 COMMUNICATIONS, LLC - WY 640   2023-01-27   
307-407 1 West Spearfish WY SXFLSDCOTMD  450F ONVOY, LLC - WY 640   2021-07-11   
307-407 2 West Spearfish WY SXFLSDCOX0X  624H ONVOY SPECTRUM, LLC 640   2022-01-08   
307-407 3 West Spearfish WY SXFLSDCOTMD  450F ONVOY, LLC - WY 640   2020-10-10   
307-407 4 West Spearfish WY SXFLSDCOTMD  450F ONVOY, LLC - WY 640   2020-10-10   
307-407 5 West Spearfish WY SXFLSDCOX0X  624H ONVOY SPECTRUM, LLC 640   2021-07-18   
307-407 6 West Spearfish WY SXFLSDCOTMD  450F ONVOY, LLC - WY 640   2021-03-02   
307-407 7 West Spearfish WY SXFLSDCOTMD  450F ONVOY, LLC - WY 640   2021-03-02   
307-407 8 West Spearfish WY SXFLSDCOTMD  450F ONVOY, LLC - WY 640   2021-08-27   
307-407 9 West Spearfish WY SXFLSDCOX0X  624H ONVOY SPECTRUM, LLC 640   2021-10-30   

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

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