Robtex

Up: 185.72.38.0/23
Can't show all results, try to descend to a more specific CIDR
Down left: 185.72.39.0/25
Down right: 185.72.39.128/25
(Some of the IP numbers are capped at 3 entries)

IP	Type	Hostname
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