Robtex

Up: 193.244.72.0/21
Can't show all results, try to descend to a more specific CIDR
Down left: 193.244.76.0/23
Down right: 193.244.78.0/23
(Some of the IP numbers are capped at 3 entries)

IP	Type	Hostname
193.244.76.200	A+PTR	ns.kbc.be
193.244.77.69	A	citrixbe0.kbc-group.com
193.244.77.72	A	citrixbe.kbc-group.com
193.244.79.21	A+PTR	mail1.mailinfra.com
193.244.79.22	A+PTR	mail2.mailinfra.com
193.244.79.23	A+PTR	mail3.mailinfra.com
193.244.79.25	PTR	mail.mail-cbc.be
193.244.79.25	A+PTR	mail.mail-kbc.be
193.244.79.25	A+PTR	mail10.mailinfra.com
193.244.79.26	PTR	mail12.mailinfra.com
193.244.79.27	PTR	mail11.mailinfra.com