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: HSTQTXRG6MD

NPA-NXX BLOCK Rate Centre Region OCN LATA LIR Eff date Disc date
936-777 A Conroe TX 139F WORLDCALL INTERCONNECT INC. 560      
936-888 A Hudson (Angelina) TX 139F WORLDCALL INTERCONNECT INC. 560      
936-999 A Zavalla TX 139F WORLDCALL INTERCONNECT INC. 560      
979-283 A Louise TX 139F WORLDCALL INTERCONNECT INC. 560      
979-444 A Carmine TX 139F WORLDCALL INTERCONNECT INC. 560      
979-989 A Markham TX 139F WORLDCALL INTERCONNECT INC. 560      
979-998 A Industry TX 139F WORLDCALL INTERCONNECT INC. 560      
979-999 A Garwood TX 139F WORLDCALL INTERCONNECT INC. 560      

Last updated: Fri, 01 Jul 2022 02:53:40 UTC

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