Robtex

Up: 193.135.0.0/23
Can't show all results, try to descend to a more specific CIDR
Down left: 193.135.0.0/25
Down right: 193.135.0.128/25
(Some of the IP numbers are capped at 3 entries)

IP	Type	Hostname
193.135.0.20	PTR	mail.jungbunzlauer.ch
193.135.0.58	A+PTR	mail.basel.experta.ch
193.135.0.115	A	mail.robusta.ch
193.135.0.125	A+PTR	mailhost.linnea-worldwide.com
193.135.0.125	A	mailhost.linnea-worldwide.ch
193.135.0.125	A	mailhost.linnea-us.com