new hosts appearing between 2011-04-18 and 2011-04-25:
www.eonet.jp
www.gamasutra.com
www.informationweek.com
www.jyb.cn
www.k12.pa.us
www.leganerd.com
www.streamtheworld.com
www.sysu.edu.cn
www.tradebit.com

hosts disappearing between 2011-04-18 and 2011-04-25:
gitorious.org
www.mhlw.go.jp