Robtex

Up: 45.66.80.0/23
Can't show all results, try to descend to a more specific CIDR
Down left: 45.66.80.0/25
Down right: 45.66.80.128/25
(Some of the IP numbers are capped at 3 entries)

IP	Type	Hostname
45.66.80.21	PTR	rp1.orlandi.com
45.66.80.21	A	lincobaxo.com
45.66.80.21	A	diegoponti.it
45.66.80.22	A	stfu.orlandi.com
45.66.80.26	A+PTR	webmail.geniusware.it
45.66.80.68	A	mx1.orlandi.com
45.66.80.75	A	smarthost.orlandi.com