Ben is a Sub-District (Tehsil/Block/Mandal) in the Nalanda District of Bihar. As par Census 2011 information the sub-district code of Ben is 01393. There are about 20 sub-districts in Nalanda and Ben is one of them. Asthawan, Bihar, Bind, Chandi, Ekangarsarai, Giriak, Harnaut, Hilsa, Islampur, Karai Parsurai, Katrisarai, Nagar Nausa, Noorsarai, Parbalpur, Rahui, Rajgir, Sarmera, Silao, Tharthari etc. are other sub-districts in Nalanda.There are about 32 villages in Ben sub-district, which you can browse from villages list.