Investigation Discovery HD: Airtel, Sun Direct DD National HD: DD Free Dish* &xplor HD: Airtel Sony Sports Ten 4 HD: Sun Direct DD Sports HD: DD Free Dish* DD India HD: DD Free Dish* ETV Bal Bharat HD: None Zee Thirai HD: Airtel Vijay Super HD: d2h** Gemini Music HD: Airtel, Sun Direct ETV Cinema HD: None ETV Plus HD: None Asianet Movies HD: d2h Zee Picchar HD: None Pravah Picture HD: Dish TV NSS6/SES8, Sun Direct Star Kiran HD: Dish TV NSS6/SES8 Tarang HD: None
*Also on Dish TV NSS6/SES8
**Also on Dish TV ST2
You can refer to my thread here for a complete list, though I have not yet updated DD Sports HD there, or refer to this link which also has DD Sports HD.