new hosts appearing between 2011-07-29_0500 and 2011-07-29_1000:

hosts disappearing between 2011-07-29_0500 and 2011-07-29_1000:
www.ed.gov
www.exacttarget.com
www.gamasutra.com
www.harvard.edu
www.informationweek.com
www.qwest.com
www.uni-muenchen.de