Robtex

Up: 108.160.172.0/24
Can't show all results, try to descend to a more specific CIDR
Down left: 108.160.172.0/26
Down right: 108.160.172.64/26
(Some of the IP numbers are capped at 3 entries)

IP	Type	Hostname
108.160.172.1	A	dl-client94.dropbox.com
108.160.172.1	A	s022666.com
108.160.172.1	A	dl-client17.dropbox.com
108.160.172.4	A	block-api-sjc.dropbox-dns.com
108.160.172.5	A	gslb-dl.dropboxusercontent.com
108.160.172.65	A	dl-client86.dropbox.com
108.160.172.65	A	dl-client23.dropbox.com
108.160.172.65	A	dl-client66.dropbox.com
108.160.172.66	A	wwwy70a.com
108.160.172.68	A	edge-block-api.dropbox-dns.com