Robtex

Up: 217.140.8.0/21
Can't show all results, try to descend to a more specific CIDR
Down left: 217.140.12.0/23
Down right: 217.140.14.0/23
(Some of the IP numbers are capped at 3 entries)

IP	Type	Hostname
217.140.12.13	A	mail.paperlinxtest.com
217.140.13.30	A	pers-mail.infonet.nl
217.140.13.30	A	pers-mail2.infonet.nl
217.140.13.37	A	www.kesselnet.nl
217.140.13.37	A	www.kamans.nl
217.140.13.37	A	mail.kamans.nl
217.140.13.40	A	cccmm.slo.ccc.bt.com
217.140.13.42	A	mail.hccs.eu
217.140.13.60	A	ccc.bt.com
217.140.15.129	PTR	mx2.kappapackaging.com
217.140.15.138	A+PTR	mx20.smurfitkappa.com
217.140.15.139	A	mx21.smurfitkappa.com