new hosts appearing between 2011-07-23_1500 and 2011-07-23_2000: www.android-au.jp www.edu.cn www.elseptimoarte.net www.klex.ru www.maxifoot.fr www.sch.gr www.sysu.edu.cn www.tsinghua.edu.cn www.uni-muenchen.de www.voc.com.cn www.zte.com.cn hosts disappearing between 2011-07-23_1500 and 2011-07-23_2000: www.dafont.com www.energy.gov www.handbrake.fr www.iij4u.or.jp www.ovh.es www.python.org