Robtex

Up: 216.230.32.0/21
Can't show all results, try to descend to a more specific CIDR
Down left: 216.230.36.0/23
Down right: 216.230.38.0/23
(Some of the IP numbers are capped at 3 entries)

IP	Type	Hostname
216.230.36.21	A+PTR	216.230.36.21.host.smartcity.net
216.230.36.21	A	gamblesolutions.com
216.230.36.21	A	kejutan2020.com
216.230.37.68	PTR	216.230.37.68.host.smartcitytelecom.com
216.230.37.68	A	216.230.37.68.host.smartcity.net
216.230.37.68	A	mimville.com
216.230.38.21	A	kejutan2020.com
216.230.38.21	A	thietbiytevathuoc.com
216.230.38.21	A	cerejinhablog.com
216.230.39.2	PTR	216.230.39.2.host.smartcity.net