Robtex

Up: 185.72.32.0/21
Can't show all results, try to descend to a more specific CIDR
Down left: 185.72.36.0/23
Down right: 185.72.38.0/23
(Some of the IP numbers are capped at 3 entries)

IP	Type	Hostname
185.72.37.133	PTR	mailscan.beesmart.dk
185.72.37.133	A	infoviewer.dk
185.72.37.133	A	www.snedsted.dk
185.72.39.4	A	thyfon.com
185.72.39.4	A	mail.thyfon.com
185.72.39.102	A	*.svaevethy.dk
185.72.39.102	A	mail.eknm.dk
185.72.39.102	A	smtp-mx.svaevethy.dk
185.72.39.229	A+PTR	mailscan.awakeme.dk
185.72.39.229	A	exchange.awakeme.dk