This was the Indian space organisation’s twentieth satellite mission through Arianespace. It will add to that count when it launches two more satellites – GSAT 11 and GSAT-11 – using Arianespace launchers in 2017.
http://www.indiantelevision.com/satellites/satellite-launches/gsat-18-successfully-launches-new-capacity-for-dth-operators-tv-channels-161006