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: DLLSTX3769Z

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NPA-NXX BLOCK Rate Centre Region OCN LATA LIR Eff date Disc date
945-333 3 McKinney TX 473F USFON, INC. - TX 552   2021-01-15   
945-400 A Frisco TX 473F USFON, INC. - TX 552      
945-400 0 Frisco TX 473F USFON, INC. - TX 552   2021-01-15   
945-444 A Grand Prairie TX 473F USFON, INC. - TX 552      
945-444 4 Grand Prairie TX 473F USFON, INC. - TX 552   2021-01-15   
945-500 A Carrollton TX 473F USFON, INC. - TX 552      
945-500 0 Carrollton TX 473F USFON, INC. - TX 552   2021-01-15   
945-666 A Palmer TX 473F USFON, INC. - TX 552      
945-666 6 Palmer TX 473F USFON, INC. - TX 552   2021-01-15   
945-800 A Plano TX 473F USFON, INC. - TX 552      
945-800 0 Plano TX 473F USFON, INC. - TX 552   2021-01-15   
945-900 A Waxahachie TX 473F USFON, INC. - TX 552      
945-900 0 Waxahachie TX 473F USFON, INC. - TX 552   2021-01-15   
945-945 A Dallas TX 473F USFON, INC. - TX 552      
945-945 2 Dallas TX 473F USFON, INC. - TX 552   2023-03-27   
945-945 3 Dallas TX 473F USFON, INC. - TX 552   2023-03-27   
945-945 4 Dallas TX 473F USFON, INC. - TX 552   2023-03-27   
945-945 5 Dallas TX 473F USFON, INC. - TX 552   2023-03-27   
945-945 6 Dallas TX 473F USFON, INC. - TX 552   2023-03-27   
945-945 7 Dallas TX 473F USFON, INC. - TX 552   2023-03-27   
945-945 8 Dallas TX 473F USFON, INC. - TX 552   2023-03-27   
945-945 9 Dallas TX 473F USFON, INC. - TX 552   2023-03-27   
972-777 A Dallas TX 473F USFON, INC. - TX 552      
972-777 7 Dallas TX 473F USFON, INC. - TX 552   2020-01-16   
972-777 8 Dallas TX 473F USFON, INC. - TX 552   2020-01-16   
979-225 A Borden TX 139F WORLDCALL INTERCONNECT INC. 570      
979-225 5 Borden TX 139F WORLDCALL INTERCONNECT INC. 570   2016-05-30   
979-333 A La Grange TX 139F WORLDCALL INTERCONNECT INC. 570      
979-333 3 La Grange TX 139F WORLDCALL INTERCONNECT INC. 570   2015-12-27   
979-666 A Moravia TX 139F WORLDCALL INTERCONNECT INC. 570      
979-666 6 Moravia TX 139F WORLDCALL INTERCONNECT INC. 570   2016-05-30   

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Last updated: Tue, 16 Apr 2024 01:38:01 UTC

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