Robtex

Up: 151.1.64.0/18
Can't show all results, try to descend to a more specific CIDR
Down left: 151.1.96.0/20
Down right: 151.1.112.0/20
(Some of the IP numbers are capped at 3 entries)

IP	Type	Hostname
151.1.96.20	PTR	backupmx.webhostingitalia.com
151.1.96.24	A	smtp.armada.it
151.1.96.123	PTR	mail.emailperte.it
151.1.96.123	A	mail.emailperte.com
151.1.96.126	PTR	server.serverxte.com
151.1.96.126	A	confidiromagna.com
151.1.96.126	A	mail.rambopizza.it
151.1.96.127	PTR	server.serverxte.com
151.1.96.128	PTR	server.serverxte.com
151.1.96.128	A	mail.tennisuispmodena.it
151.1.96.128	A	cloudenterprise.it
151.1.96.130	PTR	reverse.windowspertepro.com
151.1.96.165	PTR	1.serverperte.com
151.1.96.165	A	sagemasnc.com
151.1.96.165	A	parkingcefalu.com
151.1.96.166	PTR	reverse.serverperte.com
151.1.96.169	PTR	server.cpanelhostingperte.com
151.1.96.195	A	mail.ebabycommunity.it
151.1.96.203	A	istitutikennedy.it
151.1.96.203	A	www.istitutikennedy.it
151.1.96.208	PTR	server.archisio.it
151.1.96.208	A	archisio.it
151.1.96.225	A+PTR	server.tonerecartucceonline.it
151.1.96.225	A	mail.tonerecartucceonline.com
151.1.96.225	A	ns1.tonerecartucceonline.it
151.1.101.16	A+PTR	gw01-ge.it.net
151.1.101.19	A	gepc026.it.net
151.1.101.21	A	gesr007.it.net
151.1.101.25	A	winproxy.it.net
151.1.101.34	A	mobilemat.net
151.1.101.100	A	fw-vpn.it.net
151.1.101.160	A	hds01-ge.it.net
151.1.101.161	A	hmclab1.it.net
151.1.101.162	A	hmclab2.it.net
151.1.101.250	A	vantive.it.net
151.1.104.59	A	satlog.it
151.1.104.114	A	plannify.net
151.1.105.45	A	mail.derev.com
151.1.105.45	A	derev.info
151.1.105.45	A	derev.eu
151.1.105.142	A	www.aganahuei.com
151.1.108.7	PTR	posta.libero.it
151.1.108.11	PTR	webredirect.miot.libero.it
151.1.108.11	A	posta39a.mailbeta.libero.it
151.1.109.3	PTR	posta1.posta.libero.it
151.1.109.6	PTR	posta4.posta.libero.it
151.1.109.36	A	dns2-priv.libero.it