This is a file extracted from a package named ipset-lists from OpenWRT project (https://github.com/coolsnowwolf/lede). I will update it upon necessary. Please decode it to a normal txt before using it:
git clone https://github.com/crotoc/unblock-youku-list.git
cd unblock-youku-list
base64 -d unblock-youku.txt >unblock-youku.decoded.txt