Robtex

Up: 193.24.216.0/21
Can't show all results, try to descend to a more specific CIDR
Down left: 193.24.216.0/23
Down right: 193.24.218.0/23
(Some of the IP numbers are capped at 3 entries)

IP	Type	Hostname
193.24.216.130	A+PTR	mail2.hydac.com
193.24.216.130	A	mail2.hydac.de
193.24.216.130	A	mail.hydac.biz
193.24.216.150	A+PTR	mail.hydac.com
193.24.216.150	A	mail.hydac.de
193.24.216.150	A	mail.hydacindia.com