Robtex

Up: 212.71.122.0/23
Can't show all results, try to descend to a more specific CIDR
Down left: 212.71.122.0/25
Down right: 212.71.122.128/25
(Some of the IP numbers are capped at 3 entries)

IP	Type	Hostname
212.71.122.58	PTR	mail.contexta.ch
212.71.122.114	PTR	mail.hexa.ch
212.71.122.130	PTR	mx.gits.ch
212.71.122.137	A+PTR	mail.teleinformatik.ch
212.71.122.137	A	email.teleinformatik.ch
212.71.122.170	A	webmail.emoticom.ch
212.71.122.185	A	gw1-rum.4synergy.com
212.71.122.186	A+PTR	fw1-rum.4synergy.com
212.71.122.189	A+PTR	4s-in189.4synergy.com
212.71.122.189	A	44s.info
212.71.122.190	A+PTR	hermes.4synergy.com
212.71.122.190	A	44s.info
212.71.122.190	A	ns4.ottiger.cc