In India, the vehicle number plate code “DD” belongs to the Union Territory Dadra & Nagar Haveli and Daman and Diu.

If you see an Indian car starting with DD (for example, DD 01 AB 1234), it means the vehicle is registered in this new combined Union Territory, which officially received the DD registration mark from the Ministry of Road Transport & Highways in January 2020.

So, DD number plate = Dadra & Nagar Haveli and Daman and Diu (UT) in the Indian vehicle registration system.

Information gathered from public forums or data available on the internet and portrayed here.