Robtex

Up: 192.31.230.0/23
Can't show all results, try to descend to a more specific CIDR
Down left: 192.31.231.0/25
Down right: 192.31.231.128/25
(Some of the IP numbers are capped at 3 entries)

IP	Type	Hostname
192.31.231.0	A+PTR	network-legacy.labs.vu.nl
192.31.231.4	A	nouka.cs.vu.nl
192.31.231.6	A	nimitz.cs.vu.nl
192.31.231.8	A	bruin000.cs.vu.nl
192.31.231.9	A	sunbird.cs.vu.nl
192.31.231.11	A	blade027.cs.vu.nl
192.31.231.13	A+PTR	kontiki.cs.vu.nl
192.31.231.14	A	kocha.cs.vu.nl
192.31.231.15	A	dekschuit.cs.vu.nl
192.31.231.16	A	dromon.cs.vu.nl
192.31.231.17	A	efsix.cs.vu.nl
192.31.231.19	A+PTR	kajak.cs.vu.nl
192.31.231.20	A	etap.cs.vu.nl
192.31.231.22	A	bm.cs.vu.nl
192.31.231.25	A	drakkar.cs.vu.nl
192.31.231.26	A	felouk.cs.vu.nl
192.31.231.28	A	blade036.cs.vu.nl
192.31.231.30	A	bruin005.cs.vu.nl
192.31.231.31	A+PTR	felucca.cs.vu.nl
192.31.231.32	A+PTR	floater.cs.vu.nl
192.31.231.33	A	swpc518.cs.vu.nl
192.31.231.37	A	schoener.cs.vu.nl
192.31.231.40	PTR	swpc308.cs.vu.nl
192.31.231.42	PTR	star.cs.vu.nl
192.31.231.42	A	ns1.minix-3.net
192.31.231.42	A	ns1.minix-vmd.org
192.31.231.43	A+PTR	top-legacy.few.vu.nl
192.31.231.45	A	aurora.cs.vu.nl
192.31.231.46	A	rescue2.few.vu.nl
192.31.231.49	A	sirally.cs.vu.nl
192.31.231.50	A	kwak.cs.vu.nl
192.31.231.51	A+PTR	fspc024.few.vu.nl
192.31.231.52	A	trekschuit.cs.vu.nl
192.31.231.54	A	hydrofoil.cs.vu.nl
192.31.231.56	A	skiff.cs.vu.nl
192.31.231.57	A	lichter.cs.vu.nl
192.31.231.58	A	papyrusboot.cs.vu.nl
192.31.231.61	A+PTR	breker.cs.vu.nl
192.31.231.63	A	skarl.cs.vu.nl
192.31.231.64	A	valk.cs.vu.nl
192.31.231.66	A+PTR	star-dns-old.cs.vu.nl
192.31.231.68	A	sloep87.cs.vu.nl
192.31.231.69	A	skutsje.cs.vu.nl
192.31.231.70	A	contender.cs.vu.nl
192.31.231.71	A	sloep60.cs.vu.nl
192.31.231.72	A	kolibri.cs.vu.nl
192.31.231.74	A	regenboog.cs.vu.nl
192.31.231.75	A	sloep68.cs.vu.nl
192.31.231.76	A	beurtschip.cs.vu.nl
192.31.231.77	A	sloep53.cs.vu.nl
192.31.231.79	A+PTR	kielboot.cs.vu.nl
192.31.231.80	A	veldersschuit.cs.vu.nl
192.31.231.84	A+PTR	schouw.cs.vu.nl
192.31.231.85	A	sunset.cs.vu.nl
192.31.231.86	A	swpc253.cs.vu.nl
192.31.231.91	A	kievit.cs.vu.nl
192.31.231.94	A	hektjalk.cs.vu.nl
192.31.231.95	A	vaurien.cs.vu.nl
192.31.231.96	A	mir.cs.vu.nl
192.31.231.97	A+PTR	apollo.cs.vu.nl
192.31.231.98	A	finnjol.cs.vu.nl
192.31.231.100	A+PTR	domp.cs.vu.nl
192.31.231.101	A	schuit.cs.vu.nl
192.31.231.102	A	swpc430.cs.vu.nl
192.31.231.103	A	jonk.cs.vu.nl
192.31.231.104	A	spits.cs.vu.nl
192.31.231.105	A	hoeker.cs.vu.nl
192.31.231.107	A	buis.cs.vu.nl
192.31.231.114	A	kraak.cs.vu.nl
192.31.231.115	A	swpc447.cs.vu.nl
192.31.231.117	A	schakel.cs.vu.nl
192.31.231.118	A	seahorse.cs.vu.nl
192.31.231.121	A	dawn.cs.vu.nl
192.31.231.122	A	contest.cs.vu.nl
192.31.231.125	A	pluit.cs.vu.nl
192.31.231.135	A	pluut.cs.vu.nl
192.31.231.138	A	postboot.cs.vu.nl
192.31.231.143	A	raderboot.cs.vu.nl
192.31.231.144	A	kaik.cs.vu.nl
192.31.231.145	A	barkentijn.cs.vu.nl
192.31.231.146	A	optima.cs.vu.nl
192.31.231.147	A	korvet.cs.vu.nl
192.31.231.148	A	speedboot.cs.vu.nl
192.31.231.150	A	blade008.cs.vu.nl
192.31.231.153	A	calm.cs.vu.nl
192.31.231.154	A	vlet.cs.vu.nl
192.31.231.158	A+PTR	snauw.cs.vu.nl
192.31.231.159	A+PTR	wongka.cs.vu.nl
192.31.231.160	A	hekwieler.cs.vu.nl
192.31.231.161	A	javelin.cs.vu.nl
192.31.231.164	A	neptun.cs.vu.nl
192.31.231.167	A+PTR	bootschip.cs.vu.nl
192.31.231.169	A	chebeck.cs.vu.nl
192.31.231.173	A	sunray.cs.vu.nl
192.31.231.175	A	somp.cs.vu.nl
192.31.231.176	A	simoun.cs.vu.nl
192.31.231.177	A	laserjet1.cs.vu.nl
192.31.231.182	A+PTR	askeladden.cs.vu.nl
192.31.231.185	A	karveel.cs.vu.nl
192.31.231.186	A	lichtship.cs.vu.nl
192.31.231.190	A	bruin009.cs.vu.nl
192.31.231.193	A	onderzeeboot.cs.vu.nl
192.31.231.196	A	fellowship.cs.vu.nl
192.31.231.197	A	tender.cs.vu.nl
192.31.231.205	A+PTR	drakenboot.cs.vu.nl
192.31.231.206	A	swan.cs.vu.nl
192.31.231.209	A	pinisi.cs.vu.nl
192.31.231.212	A	gig.cs.vu.nl
192.31.231.220	A	boeier.cs.vu.nl
192.31.231.222	A	fregat.cs.vu.nl
192.31.231.223	A	patrouilleboot.cs.vu.nl
192.31.231.224	A	coaster.cs.vu.nl
192.31.231.225	A+PTR	kof.cs.vu.nl
192.31.231.226	A	sloep81.cs.vu.nl
192.31.231.227	A+PTR	schokker.cs.vu.nl
192.31.231.228	A	searay.cs.vu.nl
192.31.231.229	A	bons.cs.vu.nl
192.31.231.230	A	kotter.cs.vu.nl
192.31.231.234	A	grinde.cs.vu.nl
192.31.231.236	A	kruiser.cs.vu.nl
192.31.231.237	A	gulet.cs.vu.nl
192.31.231.239	A	sealine.cs.vu.nl
192.31.231.240	A+PTR	dyn-legacy-240.labs.vu.nl
192.31.231.241	A+PTR	dyn-legacy-241.labs.vu.nl
192.31.231.242	A	carrier.cs.vu.nl
192.31.231.248	A	westlander.cs.vu.nl
192.31.231.254	A	atocha.cs.vu.nl