Robtex

Up: 89.189.40.0/23
Can't show all results, try to descend to a more specific CIDR
Down left: 89.189.40.0/25
Down right: 89.189.40.128/25
(Some of the IP numbers are capped at 3 entries)

IP	Type	Hostname
89.189.40.14	PTR	ip.89.189.40.14.static.telemar.it
89.189.40.14	A	posta.lucas.eu
89.189.40.50	PTR	domino01.tomasetto.com
89.189.40.50	A	remote.tomasetto.com
89.189.40.66	PTR	ip.89.189.40.66.static.telemar.it
89.189.40.66	A	mail.sdimpianti.it
89.189.40.114	PTR	ip.89.189.40.114.static.telemar.it
89.189.40.114	A	mail.effe2.ru
89.189.40.114	A	mail.effe2.com
89.189.40.134	A	mail.giupi.it
89.189.40.140	PTR	ip.89.189.40.140.static.telemar.it
89.189.40.140	A	montura.cn
89.189.40.140	A	monturaediting.com
89.189.40.163	PTR	ip.89.189.40.163.static.telemar.it
89.189.40.163	A	mail2.maxiufficio.it
89.189.40.163	A	mail2.zoppello.it
89.189.40.174	A+PTR	mail3.vicenzasped.com
89.189.40.194	PTR	ip.89.189.40.194.static.telemar.it
89.189.40.194	A	pfsense.terrossa.it
89.189.40.222	A	diamondtradinggroup.com