Robtex

Up: 104.244.42.0/25
Can't show all results, try to descend to a more specific CIDR
Down left: 104.244.42.0/27
Down right: 104.244.42.32/27
(Some of the IP numbers are capped at 3 entries)

IP	Type	Hostname
104.244.42.1	A	noblepro.net
104.244.42.1	A	twitter.hk
104.244.42.1	A	twopensource.com
104.244.42.2	A	tpop-api.twitter.com
104.244.42.2	A	api.twitter.com
104.244.42.3	A	upload-34-0-0.twitter.com
104.244.42.3	A	probe.twitter.com
104.244.42.3	A	tweetsdeck.com
104.244.42.4	A	tdweb.twitter.com
104.244.42.4	A	blog.tweetdeck.com
104.244.42.4	A	td.twitter.com
104.244.42.5	A	t.co
104.244.42.6	A	mobile.twitter.com
104.244.42.7	A	support.twitter.com
104.244.42.8	A	syndication.twimg.com
104.244.42.8	A	syndication.twitter.com
104.244.42.9	A	g-o.twimg.com
104.244.42.11	A	upload.twitter.com
104.244.42.12	A	t.lv.twimg.com