new hosts appearing between 2011-09-15_1500 and 2011-09-15_2000:
www.mikrotik.com
www.telkom.co.id
www.uv.es

hosts disappearing between 2011-09-15_1500 and 2011-09-15_2000:
telkom.co.id
www.iij4u.or.jp
www.podnapisi.net
www.usf.edu