Here is a list of working free trackers:
udp://tracker.openbittorrent.com:80/announce
http://tracker.openbittorrent.com:80/announce
udp://tracker.publicbt.com:80/announce
http://tracker.publicbt.com:80/announce
http://tracker.torrentparty.com:6969/announce
http://nemesis.1337x.org/announce
http://11.rarbg.com/announce
http://tv.tracker.prq.to:80/announce
http://tv.tracker.prq.to/announce
http://tracker.torrent-downloads.to:5869/announce
http://torrent-downloads.to:5869/announce
http://denis.stalker.h3q.com:6969/announce
http://bt1.the9.com:6969/announce
http://tracker.openbittorrent.com/announce
udp://tracker.openbittorrent.com:80/announce
udp://tracker.istole.it:80/announce
http://tracker.istole.it/announce
udp://tracker.publicbt.com:80/announce
http://tracker.publicbt.com/announce
http://11.rarbg.com/announce
http://photodiode.mine.nu/announce
http://tracker.xpear.de:6969/announce
http://tracker.harryy.us/announce
http://10.rarbg.com/announce
http://tracker.torrentparty.com:6969/announce
http://photodiode.mine.nu:6969/announce
http://tracker.torrentparty.com/announce
http://genesis.1337x.org:1337/announce
http://pow7.com/announce