Dum Dum (Bengali দমদম Dômdôm) is a populated municipality near north Kolkata. It comes under Barrackpore sub-division and North 24 Parganas district of the state of West Bengal. It is a part of the area covered by Kolkata Metropolitan Development Authority. It is one of the main entry points to the city of Kolkata, providing a number of transportation facilities into that city from the northwest, such as Netaji Subhas Chandra Bose International Airport, formerly Dum Dum Airport, which offers domestic and international flights. Dum Dum has developed into a modern commercial centre and also hosts the Ordnance Factory Dumdum (OFDC) of the Ordnance Factories Board, which manufactures armaments and other equipment for the Indian Armed Forces. Dum Dum region is about 10 km from the city centre, defined as the Esplanade, Kolkata.