XERXES who is also a member of the Pakistan Cyber Crew.
Most of these are zonal websites of the Ministry of Indian Railways of Government of India.
They are used by Indian railway for there zonal, manufacturing units, research and knowledge websites.
However, the main ticketing and reservation website operated by IRCTC which has not been hacked.
The websites are still showing the deface page at the time of writing this article.
source: www.techworm.net