Robtex

Up: 83.138.32.0/19
Can't show all results, try to descend to a more specific CIDR
Down left: 83.138.32.0/21
Down right: 83.138.40.0/21
(Some of the IP numbers are capped at 3 entries)

IP	Type	Hostname
83.138.32.1	A+PTR	gw-westlakes.netnw.net.uk
83.138.33.68	A	mail.telegeneration.com
83.138.33.114	A	mangw.ipsa-power.com
83.138.33.149	A	mail2.sentricdigital.com
83.138.34.3	PTR	ocp2.citrusinternet.co.uk
83.138.34.17	PTR	ocp17.netnw.net.uk
83.138.34.33	PTR	ocp33.netnw.net.uk
83.138.34.35	PTR	ocp35.netnw.net.uk
83.138.34.50	PTR	ocp50.netnw.net.uk
83.138.34.80	PTR	ocp80.netnw.net.uk
83.138.34.97	PTR	ocp97.netnw.net.uk
83.138.34.178	PTR	ocp178.netnw.net.uk
83.138.34.179	PTR	ocp179.netnw.net.uk
83.138.34.227	PTR	ocp227.netnw.net.uk
83.138.34.241	PTR	ocp241.netnw.net.uk
83.138.34.243	PTR	ocp243.netnw.net.uk
83.138.39.0	PTR	no-reverse.netnw.net.uk
83.138.39.24	A	discountspy.co.uk
83.138.39.98	PTR	no-reverse.netnw.net.uk
83.138.39.98	A	tenderline.co.uk
83.138.40.1	A	router.atlasinternet.net
83.138.40.250	A+PTR	ns3.atlasinternet.net
83.138.41.9	A	mx1.atlasinternet.net
83.138.41.9	A	roma.atlasinternet.net
83.138.41.9	A	mx.atlasinternet.net
83.138.41.11	A	paris.atlasinternet.net
83.138.41.33	A+PTR	ns1.atlasinternet.net
83.138.41.34	A+PTR	ns2.atlasinternet.net
83.138.41.35	A+PTR	roma.atlasinternet.net
83.138.41.35	A	ns1.atlasinternet.es
83.138.41.36	PTR	ns1.atlasinternet.es
83.138.41.37	A	roma.atlasinternet.net
83.138.41.101	PTR	vm01.atlas.es
83.138.41.102	A	vm02.atlas.es
83.138.41.103	A+PTR	vm03.atlas.es
83.138.41.103	A	bctours.net
83.138.41.103	A	balearesconsignatarios.com
83.138.41.104	PTR	vm04.atlas.es
83.138.41.109	A	mx.atlasinternet.net
83.138.41.112	A+PTR	vm12.atlas.es
83.138.41.112	A	clinicarotger.es
83.138.41.112	A	toldosmiralles.com
83.138.41.115	PTR	vm15.atlas.es
83.138.41.115	A	dbalears.cat
83.138.41.116	A	dbalears.cat
83.138.41.117	A	dbalears.cat
83.138.41.118	A	dbalears.cat
83.138.41.119	A	dbalears.cat
83.138.41.119	A	ventaycambio.es
83.138.41.128	PTR	vm28.atlas.es
83.138.41.128	A	www.timonhotel.com
83.138.41.128	A	www.donmiguelhotel.com
83.138.41.130	A	vm30.atlas.es
83.138.41.130	A	banners.evoluhcion.es
83.138.41.131	PTR	vm31.atlas.es
83.138.41.131	A	banners.evoluhcion.es
83.138.41.140	A	bctours.net
83.138.41.201	A+PTR	lab01.atlas.es
83.138.41.208	A	lab08.atlas.es
83.138.41.230	A	ofertasenmallorca.com
83.138.41.250	A	setmanarisoller.com
83.138.41.250	A	saglosa.menorca.info
83.138.41.250	A	dbalears.cat