DuckDuckGo is not working for Vodafone, Jio, Idea, Airtel users in India. However, For Excitel Broadband connection, its working fine. It is still unclear whether or not the Indian govt has banned this US-based search engine. The firm, through its twitter account, acknowledged the situation and assured to fix it ASAP. Meanwhile, users are suggested to change the DNS settings to 18.104.22.168. DuckDuckGo is considered as a highly secured search engine.