new hosts appearing between 2011-08-14_1500 and 2011-08-14_2000:
www.sch.gr
www.telkom.co.id
www.tsinghua.edu.cn

hosts disappearing between 2011-08-14_1500 and 2011-08-14_2000:
telkom.co.id
www.ucla.edu
www.uni-muenchen.de