Robtex

Up: 83.245.64.0/18
Can't show all results, try to descend to a more specific CIDR
Down left: 83.245.64.0/20
Down right: 83.245.80.0/20
(Some of the IP numbers are capped at 3 entries)

IP	Type	Hostname
83.245.64.32	PTR	32-64-245-83.packetexchange.net
83.245.64.65	PTR	65-64-245-83.packetexchange.net
83.245.64.67	PTR	minnie.midentity.com
83.245.64.128	PTR	128-64-245-83.packetexchange.net
83.245.64.130	PTR	130-64-245-83.packetexchange.net
83.245.64.161	PTR	161-64-245-83.packetexchange.net
83.245.64.163	PTR	163-64-245-83.packetexchange.net
83.245.64.192	PTR	192-64-245-83.packetexchange.net
83.245.64.194	PTR	194-64-245-83.packetexchange.net
83.245.64.224	PTR	224-64-245-83.packetexchange.net
83.245.64.225	PTR	225-64-245-83.packetexchange.net
83.245.64.226	PTR	226-64-245-83.packetexchange.net
83.245.65.24	A	easysms2.com
83.245.68.1	PTR	1-68-245-83.packetexchange.net
83.245.68.34	PTR	34-68-245-83.packetexchange.net
83.245.68.66	PTR	66-68-245-83.packetexchange.net
83.245.68.192	PTR	192-68-245-83.packetexchange.net
83.245.69.1	PTR	fe1-0-churchfield.skylink.ie
83.245.69.4	PTR	fe1-0-nowen01.digitalforge.ie
83.245.69.35	PTR	35-69-245-83.packetexchange.net
83.245.69.67	PTR	fe1.office-gw.eirewire.net
83.245.69.96	PTR	96-69-245-83.packetexchange.net
83.245.69.98	PTR	98-69-245-83.packetexchange.net
83.245.69.99	PTR	99-69-245-83.packetexchange.net
83.245.69.131	PTR	131-69-245-83.packetexchange.net
83.245.69.161	PTR	161-69-245-83.packetexchange.net
83.245.69.162	PTR	162-69-245-83.packetexchange.net
83.245.69.224	PTR	224-69-245-83.packetexchange.net
83.245.69.227	PTR	227-69-245-83.packetexchange.net
83.245.70.1	PTR	1-70-245-83.packetexchange.net
83.245.70.2	PTR	2-70-245-83.packetexchange.net
83.245.70.4	PTR	4-70-245-83.packetexchange.net
83.245.70.33	PTR	33-70-245-83.packetexchange.net
83.245.70.34	PTR	34-70-245-83.packetexchange.net
83.245.70.35	PTR	35-70-245-83.packetexchange.net
83.245.70.64	PTR	64-70-245-83.packetexchange.net
83.245.70.66	PTR	66-70-245-83.packetexchange.net
83.245.70.96	PTR	96-70-245-83.packetexchange.net
83.245.70.97	PTR	97-70-245-83.packetexchange.net
83.245.70.98	PTR	98-70-245-83.packetexchange.net
83.245.70.99	PTR	99-70-245-83.packetexchange.net
83.245.70.128	PTR	128-70-245-83.packetexchange.net
83.245.70.129	PTR	129-70-245-83.packetexchange.net
83.245.70.131	PTR	131-70-245-83.packetexchange.net
83.245.70.163	PTR	163-70-245-83.packetexchange.net
83.245.70.193	PTR	193-70-245-83.packetexchange.net
83.245.70.194	PTR	194-70-245-83.packetexchange.net
83.245.70.195	PTR	195-70-245-83.packetexchange.net
83.245.70.224	PTR	224-70-245-83.packetexchange.net
83.245.70.225	PTR	225-70-245-83.packetexchange.net
83.245.70.226	PTR	226-70-245-83.packetexchange.net
83.245.70.227	PTR	227-70-245-83.packetexchange.net
83.245.72.3	PTR	3-72-245-83.packetexchange.net
83.245.72.4	PTR	4-72-245-83.packetexchange.net
83.245.72.37	PTR	37-72-245-83.packetexchange.net
83.245.72.69	PTR	69-72-245-83.packetexchange.net
83.245.72.71	PTR	71-72-245-83.packetexchange.net
83.245.72.96	PTR	96-72-245-83.packetexchange.net
83.245.72.98	PTR	98-72-245-83.packetexchange.net
83.245.72.136	PTR	136-72-245-83.packetexchange.net
83.245.72.164	PTR	164-72-245-83.packetexchange.net
83.245.72.193	PTR	193-72-245-83.packetexchange.net
83.245.73.1	PTR	domain.not.configured
83.245.73.1	A	meno-weddingbooks.com
83.245.73.66	PTR	domain.not.configured
83.245.73.97	PTR	domain.not.configured
83.245.73.160	PTR	domain.not.configured
83.245.73.200	A	meno-university.com
83.245.73.226	PTR	domain.not.configured
83.245.74.1	PTR	r1-v8-so.fastcom.ie
83.245.74.2	PTR	s1-v8-so.fastcom.ie
83.245.74.33	PTR	c3-v8-so.fastcom.ie
83.245.74.37	PTR	r2-v6-so.fastcom.ie
83.245.74.38	PTR	s1-v6-so.fastcom.ie
83.245.74.65	PTR	c1-access-vlan.so.fastcom.ie
83.245.74.123	A	mail.kovet.eu
83.245.74.123	A	mail.kovet.ie
83.245.74.161	PTR	c2-access-vlan.so.fastcom.ie
83.245.74.225	PTR	c11-access-vlan.so.fastcom.ie
83.245.75.99	A	mail.compupac.com
83.245.75.99	A	mail.sage50.ie
83.245.75.99	A	mail.pegasusopera.ie
83.245.75.103	A	mail.woodrow.ie
83.245.76.1	PTR	1-76-245-83.packetexchange.net
83.245.76.3	PTR	3-76-245-83.packetexchange.net
83.245.76.35	PTR	35-76-245-83.packetexchange.net
83.245.76.98	PTR	98-76-245-83.packetexchange.net
83.245.76.99	PTR	99-76-245-83.packetexchange.net
83.245.76.130	PTR	130-76-245-83.packetexchange.net
83.245.78.65	PTR	65-78-245-83.packetexchange.net
83.245.78.65	A	stinghlr.net
83.245.79.5	A	monitoringpoint.com
83.245.79.6	A+PTR	vnet44web11.vnetrix.com
83.245.79.6	A	bandsintransit.co.uk
83.245.79.6	A	bandsintransit.tv
83.245.79.35	A	wearehiphopheroes.com
83.245.79.35	A	universalmusicworld.jp
83.245.79.35	A	www.universalmusicworld.jp
83.245.79.66	A	gw1.vnetrix.com
83.245.79.70	A	zoomstarz.com
83.245.79.70	A	thekillers.co.uk
83.245.79.70	A	mcflyofficial.com
83.245.79.98	A	mailer.hagdms.com
83.245.79.99	A+PTR	live1.hagdms.com
83.245.79.99	A	mail.haswish.co.uk
83.245.79.99	A	haswish.co.uk
83.245.79.108	PTR	www.hagdms.com
83.245.79.129	A+PTR	umgr44vxcmsg011.uk.vvhp.net
83.245.79.139	A	mailer.iknowthescore.com
83.245.79.163	A	zaphod.vvhp.net
83.245.79.163	A	umg-uk-001.vice-versa.info
83.245.79.163	A	zaphod.uk.vvhp.net
83.245.79.166	PTR	vv44mail01.sov.uk.vvhp.net
83.245.79.166	A	umgr44vxcmsg010.uk.vvhp.net
83.245.79.196	A	ftp.hagdms.com
83.245.79.197	A	haswish.co.uk
83.245.79.204	PTR	keyn44vxclbr001.vnetrix.com
83.245.79.204	A	www.haddms.co.uk
83.245.79.204	A	www.hagdms.co.uk
83.245.79.211	PTR	mail.glastonburyfestivals.co.uk