Xunlei Networking Technology is an technology company based in China that hosts a popular website which allows people to download clips and videos from the Internet. Its file sharing and download management software supports BitTorrent, eDonkey, Kad and FTP, provides a popular peer-to-peer file sharing service, all in the Chinese language.

This signature identifies DNS queries for any host in the xunlei.com domain. This signature will likely affect all the other Xunlei applications and also affect web traffic to this domain. In some cases this signature is the only known way to block Xunlei applications.