Anonymous India, a group of hackers have claimed credit for taking down the website with a DDoS (distributed denial-of-service) attack.
According to Anonymous India it was "just preventing spammers from accessing those Email IDs posted by Trai publicly" by meting out the attack.
Earlier TRAI had released over one million names, email IDs and the contents of their responses in a downloadable PDF format on the TRAI website for public viewing.
As the number of comments was huge, TRAI has divided the comments under three categories - comments from service providers, comments from service providers associations and comments from other stakeholders.
However, the Authority drew the ire of people for exposing the privacy of people.
"Congrats TRAI on releasing the mail ids of everyone who mailed you about net neutrality. Now we know how well you protect internet users," Vir Sanghvi said on Twitter. Another person on Twitter said: "Hi TRAI, it is NOT okay for a govt. regulator to expose 1M+ email id's of respondents to your "OTT" paper! Do please note, Shri @rsprasad."