new hosts appearing between 2011-08-17_1500 and 2011-08-17_2000:
www.dumpert.nl
www.geenstijl.nl
www.lima-city.de
www.rijksoverheid.nl
www.telkom.co.id
www.uv.es

hosts disappearing between 2011-08-17_1500 and 2011-08-17_2000:
telkom.co.id
www.cfos.de
www.uni-muenchen.de