Local Calling Guide

Area code/prefix search

Search area code/prefix (NPA/NXX)
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Switch: GRFLMTMAGMD

NPA-NXX BLOCK Rate Centre Region OCN LATA LIR Eff date Disc date
406-401 5 Great Falls MT 6529 T-MOBILE USA, INC. 648   2020-12-23   
406-402 A Great Falls MT 6529 T-MOBILE USA, INC. 648      
406-402 0 Great Falls MT 6529 T-MOBILE USA, INC. 648   2022-04-02   
406-402 2 Great Falls MT 6529 T-MOBILE USA, INC. 648   2021-07-07   
406-402 3 Great Falls MT 5562 METROPCS, INC. 648   2018-06-24   
406-402 4 Great Falls MT 6529 T-MOBILE USA, INC. 648   2022-09-29   
406-402 5 Great Falls MT 6529 T-MOBILE USA, INC. 648   2021-04-15   
406-402 6 Great Falls MT 6529 T-MOBILE USA, INC. 648   2020-02-06   
406-402 7 Great Falls MT 6529 T-MOBILE USA, INC. 648   2019-04-12   
406-402 8 Great Falls MT 6529 T-MOBILE USA, INC. 648   2018-10-08   
406-402 9 Great Falls MT 6529 T-MOBILE USA, INC. 648   2017-11-15   
406-760 8 Great Falls MT 6529 T-MOBILE USA, INC. 648   2022-02-08   
406-866 8 Great Falls MT 6529 T-MOBILE USA, INC. 648   2023-10-23   
406-923 8 Great Falls MT 6529 T-MOBILE USA, INC. 648   2022-11-21   
406-923 9 Great Falls MT 6529 T-MOBILE USA, INC. 648   2022-11-21   

Last updated: Fri, 22 Mar 2024 03:02:44 UTC

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