Robtex

Up: 185.45.4.0/22
Can't show all results, try to descend to a more specific CIDR
Down left: 185.45.4.0/24
Down right: 185.45.5.0/24
(Some of the IP numbers are capped at 3 entries)

IP	Type	Hostname
185.45.5.34	A	fashionweek.twitter.com
185.45.5.34	A	election.twitter.com
185.45.5.34	A	www.search.twitter.com
185.45.5.35	A	tdweb.twitter.com
185.45.5.35	A	web.tweetdeck.com
185.45.5.35	A	blog.tweetdeck.com
185.45.5.45	A	fashionweek.twitter.com
185.45.5.45	A	election.twitter.com
185.45.5.45	A	www.search.twitter.com
185.45.5.46	A	tdweb.twitter.com
185.45.5.46	A	web.tweetdeck.com
185.45.5.46	A	blog.tweetdeck.com