The Lisburn telephone exchange code refers to the former 01846 area code, which until the 2000 Big Number Change, served Lisburn, Aghalee, Moira, Hillsborough, Dromore, Maze, Stoneyford and Baillies Mills, all of which are in Northern Ireland, a constituent part of the United Kingdom.This area gained 92 and changed to eight digit numbers, under the new 028 area code.