Robtex

Up: 212.4.0.0/19
Can't show all results, try to descend to a more specific CIDR
Down left: 212.4.16.0/21
Down right: 212.4.24.0/21
(Some of the IP numbers are capped at 3 entries)

IP	Type	Hostname
212.4.17.194	A+PTR	dns2.alicros.it
212.4.17.195	A+PTR	mail.alicros.it
212.4.17.195	A	mail.alicrosspa.it
212.4.17.195	A	mail.alicrosspa.com
212.4.17.254	PTR	mail.gozzoimpianti.it
212.4.17.254	A	mx.gozzoimpianti.com
212.4.17.254	A	mail.gozzoalgeria.com
212.4.18.106	A	www2.saesgetters.com
212.4.18.109	A	startfleet.saesgetters.com
212.4.18.110	A	leonardo.saesgetters.com
212.4.18.115	PTR	ns0.saesgetters.com
212.4.18.116	PTR	ns1.saesgetters.com
212.4.18.133	A	fgnl.net
212.4.21.8	A	adstraemer.com
212.4.21.142	A	mail.aristonthermo.com
212.4.21.143	A	mailsrv.mtsgroup.com
212.4.21.143	A	mailsrv.aristonthermo.com
212.4.21.144	A+PTR	mailelco.aristonthermo.com
212.4.21.144	A	mail.elco.net
212.4.21.147	A	webmail.aristonthermo.com
212.4.21.150	A	mail.rendamax.com
212.4.21.175	A	bkmail.aristonthermo.com
212.4.21.175	A	mailbk.aristonthermo.com
212.4.21.175	A	mailbk.mtsgroup.com
212.4.21.176	A	mail2.elco.net
212.4.22.1	A+PTR	mail3.soteha.it
212.4.22.1	A	mail.notoria.net
212.4.22.1	A	mail.msitaly.com
212.4.22.2	PTR	sthmail02.companymail.it
212.4.22.11	A	familyofficer.it
212.4.22.114	PTR	mail2.sinsys.net
212.4.22.139	A	mail.kme.com
212.4.22.139	A	mail1.kme.com
212.4.22.139	A	mail.metalbuyer.it
212.4.22.144	A	mail2.kmegroup.it
212.4.22.144	A	mail3.kme.com
212.4.22.148	A	mail2.dynamoacademy.org
212.4.22.148	A	mail2.socialvalley.org
212.4.22.165	A	mail2.culti.com
212.4.24.3	A	solarcustomers.net
212.4.24.12	A	poptrackerproducts.com
212.4.24.13	A	newideastormplanet.com
212.4.24.20	A	clickwhoadvtracker.com
212.4.24.21	A	techwiseadleverage.com
212.4.24.22	A	inframarketinguru.com
212.4.24.23	A	thinkdigitalmedias.com
212.4.24.43	A	www.giustacchini.it
212.4.24.43	A	www.fincoma.it
212.4.24.43	A	www.fiver.it
212.4.24.67	A+PTR	mailshield3.soteha.it
212.4.24.67	A	antispam.soteha.it
212.4.24.67	A	mailshield.soteha.it
212.4.24.68	PTR	mailshield4.soteha.it
212.4.24.68	A	mailshield.soteha.it
212.4.24.68	A	mailscan.soteha.it
212.4.24.70	PTR	mailshield5.soteha.it
212.4.24.70	A	mailscan.soteha.it
212.4.24.80	A	www.stilo.it
212.4.24.80	A	watchmakermilano.com
212.4.24.80	A	stilo-helmets.com
212.4.24.82	PTR	sthweb10.soteha.com
212.4.24.84	PTR	sthweb12.soteha.com
212.4.24.98	PTR	sthweb24.soteha.com
212.4.24.98	A	divodiva.org
212.4.24.98	A	divodiva.ru
212.4.24.100	PTR	sthweb26.soteha.com
212.4.24.101	PTR	sthweb27.soteha.com
212.4.24.102	PTR	sthweb28.soteha.com
212.4.24.119	A+PTR	mail.zanardonline.it
212.4.24.119	A	mail3.webland.it
212.4.24.208	PTR	mail01.mairetecnimont.com
212.4.24.208	A	mail01.tecnimont.ru
212.4.24.208	A	mail.tecnimont.it
212.4.24.209	A+PTR	mail02.mairetecnimont.com
212.4.24.209	A	mail02.tecnimont.ru
212.4.25.18	PTR	18-25-4-212.it.uu.net
212.4.25.18	A	mail.bcube.net
212.4.25.19	A	mx1.argolair.it
212.4.25.19	A	mx10.argol.it
212.4.25.19	A	mx2.mle.it
212.4.25.21	PTR	21-25-4-212.it.uu.net
212.4.28.40	PTR	mail.dbgroup.net
212.4.28.40	A	mail.distrilogikus.com
212.4.28.230	PTR	www.ingrammicro.it
212.4.30.14	A	uit10291.it.customer.alter.net
212.4.30.29	PTR	serial1-0-5.gw1.rom5.alter.net
212.4.30.30	PTR	uit200726.it.customer.alter.net
212.4.30.53	PTR	serial5-1-4-1.gw1.trn2.alter.net
212.4.30.54	PTR	uit200281.it.customer.alter.net
212.4.30.57	PTR	hssi10-0-0.509.gw2.mln4.alter.net
212.4.30.58	PTR	uit200400.it.customer.alter.net
212.4.30.62	A	uit200396.it.customer.alter.net
212.4.30.69	PTR	serial11-0-0.gw1.mln4.alter.net
212.4.30.93	PTR	multilink1.gw1.mln7.alter.net
212.4.30.110	PTR	uit200443.it.customer.alter.net
212.4.30.122	PTR	uit200454.it.customer.alter.net
212.4.30.145	PTR	multilink3.gw1.mln7.alter.net
212.4.30.146	PTR	uit200463.it.customer.alter.net
212.4.30.173	PTR	hssi4-0-0.508.gw1.mln7.alter.net
212.4.30.174	PTR	uit200456.it.customer.alter.net
212.4.30.182	PTR	uit200482.it.customer.alter.net
212.4.30.209	PTR	ge4-0-0.342.gw4.mln7.alter.net
212.4.30.213	PTR	fastethernet0-0-0.101.gw1.mln4.alter.net
212.4.30.214	PTR	uit200506.it.customer.alter.net
212.4.30.229	PTR	serial2-0-7.gw3.mln4.alter.net
212.4.31.123	PTR	trex.zero.it