Robtex

Up: 83.143.240.0/21
Can't show all results, try to descend to a more specific CIDR
Down left: 83.143.240.0/23
Down right: 83.143.242.0/23
(Some of the IP numbers are capped at 3 entries)

IP	Type	Hostname
83.143.240.8	A	4-cz.cg-dialup.net
83.143.240.35	A	4-cz.cg-dialup.net
83.143.240.37	A	4-cz.cg-dialup.net
83.143.240.38	A	4-cz.cg-dialup.net
83.143.240.43	A	4-cz.cg-dialup.net
83.143.240.44	A	4-cz.cg-dialup.net
83.143.240.46	A	4-cz.cg-dialup.net
83.143.240.98	A+PTR	mailout-03.mx3.amittoamoveo.com
83.143.240.98	A	ns1.jocurintra.com
83.143.240.98	A	ns1.wasdemail.com
83.143.240.99	PTR	mailout-04.mx3.amittoamoveo.com
83.143.240.100	A+PTR	mailout-05.mx3.amittoamoveo.com
83.143.240.100	A	ns2.vurulacluster.ro
83.143.241.5	PTR	vlan202.pe4.man4.uk.m247.com
83.143.241.17	PTR	ge-1-10-0.bb1.lon1.uk.m247.com
83.143.241.61	PTR	vlan3435.pe4.man4.uk.m247.com
83.143.241.65	PTR	ge-0-1-3421.pe1.man1.uk.m247.com
83.143.241.77	PTR	vlan3441.pe4.man4.uk.m247.com
83.143.242.8	PTR	graf.be.gbxs.net
83.143.242.10	PTR	domination.bru.globalaxs.com
83.143.243.2	PTR	sdccnsa.sdcc.net
83.143.243.2	A	wanlink1.sdcc.net
83.143.243.3	A	mx.sdcc.net
83.143.243.6	A+PTR	mail.sdcc.net
83.143.243.25	A	mail.iemkeroos.nl
83.143.243.26	A	bb1-ge0-3-0-460.amsix-nikhef.home.nl
83.143.243.51	A+PTR	mail.tkcomponents.co.uk
83.143.243.58	A	mail.matsonground.co.uk
83.143.243.147	A	marpleroadgarage.com
83.143.243.151	A	rangeroverowner.com
83.143.243.170	A	trustredline.dyndns.org
83.143.243.171	A	fs.trustredline.co.uk