Robtex

Up: 77.233.0.0/18
Can't show all results, try to descend to a more specific CIDR
Down left: 77.233.32.0/20
Down right: 77.233.48.0/20
(Some of the IP numbers are capped at 3 entries)

IP	Type	Hostname
77.233.32.1	PTR	ge-gw.stb.caveo.nl
77.233.32.4	PTR	windows.vuurstorm.nl
77.233.32.4	A	tuxtendo.nl
77.233.32.5	A	ns3.ictframeworks.com
77.233.32.13	A	f72.nl
77.233.32.13	A	mail.f72.nl
77.233.32.151	A	mail2.bossje.com
77.233.32.153	A	server5.webfontein.nl
77.233.32.154	A	server6.webfontein.nl
77.233.33.70	PTR	monitor01.duximus.net
77.233.33.70	A	mx2.mailshield.eu
77.233.33.70	A	smtp2.snuffel.net
77.233.33.98	PTR	mailrelay.caveo.nl
77.233.33.106	PTR	amsmta.cxpmvs.com
77.233.34.6	A+PTR	plesk01.siteview.nl
77.233.34.11	A	mail.rnrnet.net
77.233.34.11	A	plesk11.siteview.nl
77.233.34.12	A	volppe.com
77.233.34.33	A	debloemschikwinkel.nl
77.233.34.33	A	debloemschikwinkel.be
77.233.34.33	A	bloemschikwinkel.be
77.233.34.40	PTR	plesk40.siteview.nl
77.233.34.41	PTR	plesk41.siteview.nl
77.233.34.67	A	mail.unlimitedfb.net
77.233.34.70	A	werkeningelderland.nl
77.233.34.71	A	flexpoolpubliekesector.nl
77.233.34.75	A	inhuurhhnk.nl
77.233.34.99	PTR	vps01.dynamind.nl
77.233.34.99	A	mail.touchdesk.nl
77.233.34.99	A	pinkstergemeente-filadelfia-arnhem.nl
77.233.34.100	A	fitforfree.mx
77.233.34.108	A	plesk11.siteview.nl
77.233.34.129	PTR	gateway.eun.systechmedia.org
77.233.34.131	A+PTR	deekin.systechmedia.org
77.233.34.131	A	clarisse.nu
77.233.34.131	A	mail.systechmedia.org
77.233.34.175	A	dev.devolution.nl
77.233.34.194	PTR	cl-polder.caveo.nl
77.233.34.194	A	polderknowledge.nl
77.233.34.194	A	*.polderknowledge.nl
77.233.42.146	A	mx.sonetperm.ru