Robtex

Up: 186.237.224.0/21
Can't show all results, try to descend to a more specific CIDR
Down left: 186.237.228.0/23
Down right: 186.237.230.0/23
(Some of the IP numbers are capped at 3 entries)

IP	Type	Hostname
186.237.228.2	PTR	186-237-228-2.net-rubi.com.br
186.237.228.2	A	dns1.mic-br.com
186.237.228.2	A	mic-br.com
186.237.228.3	PTR	186-237-228-3.net-rubi.com.br
186.237.228.3	A	mic-br.com
186.237.228.3	A	ns.mic-br.com
186.237.228.5	PTR	ip-186-237-228.5.net-rubi.com.br
186.237.228.5	A	nossasenhoravotuporanga.com.br
186.237.228.5	A	netrubi.com.br
186.237.229.185	PTR	186-237-229-185.static.net-rubi.com.br
186.237.229.185	A	netrubi.mercurionline.com.br
186.237.229.214	PTR	186-237-229-214.static.net-rubi.com.br
186.237.229.214	A	cloudserverdreamcs.ddns.me