Robtex

Up: 170.233.228.0/22
Can't show all results, try to descend to a more specific CIDR
Down left: 170.233.230.0/24
Down right: 170.233.231.0/24
(Some of the IP numbers are capped at 3 entries)

IP	Type	Hostname
170.233.231.21	A	hgws.com.br
170.233.231.225	PTR	mail.b3.rs
170.233.231.225	A	mail.blue3.net
170.233.231.231	A+PTR	ns01.b3.rs
170.233.231.231	A	ns01.blue3.com.br
170.233.231.232	A+PTR	ns02.b3.rs
170.233.231.232	A	ns02.blue3.com.br
170.233.231.233	A+PTR	ns03.b3.rs
170.233.231.233	A	ns03.blue3.com.br
170.233.231.234	A+PTR	ns04.b3.rs
170.233.231.234	A	ns04.blue3.com.br
170.233.231.242	A	as265198.com
170.233.231.242	A	eanimal.com.br
170.233.231.242	A	b3t.com.br
170.233.231.244	A	arlindocv.com