Robtex

Up: 5.231.228.0/23
Can't show all results, try to descend to a more specific CIDR
Down left: 5.231.229.0/25
Down right: 5.231.229.128/25
(Some of the IP numbers are capped at 3 entries)

IP	Type	Hostname
5.231.229.36	PTR	web1.lifoy.com
5.231.229.36	A	lifoy.de
5.231.229.36	A	mail.lifoy.de
5.231.229.41	A	mail.pcsysonline.de
5.231.229.41	A	mail.apart-nb.de
5.231.229.41	A	mail.lz1-winterberg.de
5.231.229.42	A	shunderdo.me
5.231.229.42	A	mail.shunderdo.me
5.231.229.42	A	services.shunderdo.me
5.231.229.46	A	cdns06.x4-tec.com
5.231.229.87	PTR	web.bladetec.de
5.231.229.134	A+PTR	danihosting.nl
5.231.229.139	A	kosahin.com
5.231.229.140	A	b.ptr.net.br
5.231.229.140	A	host4.ptr.net.br
5.231.229.140	A	b.mail.ptr.net.br
5.231.229.142	A+PTR	chris.chromium.host