Reliance Communications has said that they blocked the file sharing services operating from outside India based on the order from the court they received.
Funny enough, the order was filed by Reliance Entertainment which is practically a sister company.
A bunch of file sharing services are currently banned on Reliance Broadband. Airtel customers have reported a partial ban. Most other ISPs have either a partial ban or no block on the services.

Worth noting is that the blocked websites show the text Copyright © Reliance Entertainment
Reliance Communications said: “Under Section 79 of the IT Act, an ISP has to adhere to any copyright infringement notice and court orders. Given that Reliance Entertainment has obtained a specific order from Delhi high court to protect Don 2 from online piracy, we are in full compliance of law.”
Reliance Entertainment had this say to justify their actions: “All websites like Megaupload and Filesonic are located out of India. They rampantly promote online piracy. In fact, steps such as the John Doe Order from a court are the only step we copyright owners have.”