Robtex

Up: 66.6.42.0/23
Can't show all results, try to descend to a more specific CIDR
Down left: 66.6.43.0/25
Down right: 66.6.43.128/25
(Some of the IP numbers are capped at 3 entries)

IP	Type	Hostname
66.6.43.21	A	metforminsideeffects966.tumblr.com
66.6.43.21	A	seraphim69.tumblr.com
66.6.43.21	A	perkamperin.tumblr.com
66.6.43.22	A	hearsayandhyperbole.com
66.6.43.22	A	www.bmath.com
66.6.43.22	A	blog.thebodyshop.com
66.6.43.30	A	bw.tumblr.co
66.6.43.30	A	helloblueivycarter.tumblr.com
66.6.43.30	A	www.tumblr.co