Robtex

Up: 216.81.72.0/22
Can't show all results, try to descend to a more specific CIDR
Down left: 216.81.72.0/24
Down right: 216.81.73.0/24
(Some of the IP numbers are capped at 3 entries)

IP	Type	Hostname
216.81.72.2	A	bravotvgames.com
216.81.72.33	A+PTR	mail.itvendoroffer.com
216.81.72.33	A	ns1.itvendoroffer.com
216.81.72.34	A	mericait-venimg.com
216.81.72.34	A	itvendor2.com
216.81.72.34	A	itvendsolutions.com
216.81.72.79	A	zao.yi.org
216.81.72.128	A	colverschoten.nl
216.81.72.128	A	irealtorweb.com
216.81.72.192	A	chat.com.np
216.81.72.192	A	hostmaster.chat.com.np
216.81.72.192	A	*.chat.com.np
216.81.72.225	A	mail.vmvrewards.com
216.81.72.225	A	ns1.vmvrewards.com
216.81.72.226	PTR	vmvrewards.com
216.81.72.226	A	show-virtu.com
216.81.72.226	A	qcdsolution.com
216.81.73.1	A+PTR	mail.powerbillsaverzmail.com
216.81.73.1	A	ns1.powerbillsaverzmail.com
216.81.73.2	PTR	powerbillsaverzmail.com
216.81.73.2	A	ns2.powerbillsaverzmail.com
216.81.73.2	A	pbsaverzimg.com
216.81.73.64	PTR	electric.jceger.com
216.81.73.64	A	varsitymrtg.com
216.81.73.64	A	braidwoodgraham.co.uk
216.81.73.128	A	thesupportal.com
216.81.73.161	A	ns1.openresourcegroup.com
216.81.73.209	A+PTR	mail.ns-accpro.com
216.81.73.209	A	ns1.ns-accpro.com
216.81.73.210	A	mailout-177-209.cruiseairfarevacationplans.com
216.81.73.210	A	mailout-86-182.accuprofittruth.com
216.81.73.210	A	teamaccuprofitmembers.com