Robtex

Up: 193.244.78.0/23
Can't show all results, try to descend to a more specific CIDR
Down left: 193.244.79.0/25
Down right: 193.244.79.128/25
(Some of the IP numbers are capped at 3 entries)

IP	Type	Hostname
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	A+PTR	mail12.mailinfra.com
193.244.79.26	A	mail12.kbc.pl
193.244.79.27	A+PTR	mail11.mailinfra.com
193.244.79.27	A	ns.bodykitsblog.com
193.244.79.27	A	mail11.kbc.pl