Local Calling Guide

Area code/prefix search

Search area code/prefix (NPA/NXX)
  • Effective date searches are available only for US area codes. Our sources for non-US NPA-NXX data do not provide this information.
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Switch: DUMSTXXA6MD

NPA-NXX BLOCK Rate Centre Region OCN LATA LIR Eff date Disc date
806-421 1 Dumas TX 6529 T-MOBILE USA, INC. 546   2010-05-01   
806-717 A Dumas TX 6529 T-MOBILE USA, INC. 546      
806-717 1 Dumas TX 6529 T-MOBILE USA, INC. 546   2006-08-30   
806-717 6 Dumas TX 6529 T-MOBILE USA, INC. 546   2007-10-20   
806-717 7 Dumas TX 6529 T-MOBILE USA, INC. 546   2007-05-26   
806-717 8 Dumas TX 6529 T-MOBILE USA, INC. 546   2006-01-31   
806-717 9 Dumas TX 6529 T-MOBILE USA, INC. 546   2005-01-03   
806-751 A Dumas TX 6529 T-MOBILE USA, INC. 546      
806-751 0 Dumas TX 6529 T-MOBILE USA, INC. 546   2021-08-15   
806-751 1 Dumas TX 6529 T-MOBILE USA, INC. 546   2021-08-15   
806-751 2 Dumas TX 6529 T-MOBILE USA, INC. 546   2021-08-15   
806-751 9 Dumas TX 6529 T-MOBILE USA, INC. 546   2021-08-15   

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

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