Robtex

Up: 217.72.36.0/23
Can't show all results, try to descend to a more specific CIDR
Down left: 217.72.37.0/25
Down right: 217.72.37.128/25
(Some of the IP numbers are capped at 3 entries)

IP	Type	Hostname
217.72.37.10	A	zimbra.estep.it
217.72.37.11	A	postabckestep.biomax.it
217.72.37.13	A	www.estep.it
217.72.37.54	PTR	ip-54.37.72.217.interplanet.it
217.72.37.54	A	mail.degrocar.it
217.72.37.62	PTR	ip-62.37.72.217.interplanet.it
217.72.37.62	A	mail.studioart.it
217.72.37.82	A+PTR	servizioposta.bibetech.it
217.72.37.115	A	mx0.otoautomation.com
217.72.37.131	A	mail.uranotek.com
217.72.37.131	A	mail.conceriagea.it
217.72.37.131	A	mail.geatannery.com
217.72.37.170	A	mail.crestanfratelli.it
217.72.37.210	A+PTR	mail.ilsagroup.com
217.72.37.210	A+PTR	webmail.ilsagroup.com