new hosts appearing between 2011-08-12_1500 and 2011-08-12_2000:
www.cfos.de
www.sprint.com
www.telkom.co.id

hosts disappearing between 2011-08-12_1500 and 2011-08-12_2000:
telkom.co.id
www.fudan.edu.cn
www.series21.com
www.uni-muenchen.de