Robtex

Up: 81.2.128.0/18
Can't show all results, try to descend to a more specific CIDR
Down left: 81.2.160.0/20
Down right: 81.2.176.0/20
(Some of the IP numbers are capped at 3 entries)

IP	Type	Hostname
81.2.161.75	A	mail.miba-klemmtechnik.de
81.2.161.123	A	mail.fitness-designer.de
81.2.161.123	A	mail.fitnessdesigner.de
81.2.162.180	A	projektorbirnen.com
81.2.162.180	A	projektorbirnen.de
81.2.162.180	A	leuchtkoerper.com
81.2.162.210	A	mail.superingo.com
81.2.162.210	A	superingo.com
81.2.166.155	A	mail.gg-league.de
81.2.166.155	A	gg-league.de
81.2.166.156	A	mail.wupptech.de
81.2.166.157	A	mail.hbfm2002.de
81.2.167.18	A	reputationware.com
81.2.167.115	A	ottowestie.com
81.2.167.238	A	multiplayer-cheats.de
81.2.170.30	PTR	mail.vatrix.de
81.2.170.81	PTR	server85.serverflex.de
81.2.170.81	A	dnsflex.de
81.2.170.81	A	mail.dnsflex.de
81.2.172.100	A	gaming-experts.de
81.2.176.82	A	auto-digital.nl
81.2.176.93	A	mail.eminds.de
81.2.176.96	A	mail.xn--schtz-online-flb.com
81.2.176.111	A	xn--lters-kva.de
81.2.176.111	A	mail.xn--lters-kva.de
81.2.176.132	A	gasthaus-altweisenau-mainz.de
81.2.176.132	A	germanylastminute.de
81.2.176.132	A	germany-last-minute.de
81.2.177.173	A	thechamps.co.uk
81.2.178.169	A	pocketpz1.de
81.2.178.196	A	leilas-world.de
81.2.178.228	A	last-minute-online-urlaub.de
81.2.178.230	A	blue-airlines.de
81.2.179.54	A	mail.cosmosshop.eu
81.2.180.105	A	all4skins.com
81.2.180.105	A	4allskins.com
81.2.181.15	A	mail.tk-recycling.de
81.2.181.15	A	tk-recycling.de
81.2.181.34	A	mail.cordula.de
81.2.181.34	A	dogging.at
81.2.181.34	A	eutropia.info
81.2.184.3	A	newmail.eddiebauer.de
81.2.186.2	A+PTR	pcc001.pht-hb.it
81.2.186.2	A	pht-hb.it
81.2.186.4	A+PTR	pcd001.pht-hb.it
81.2.186.5	A	pcc002.pht-hb.it
81.2.186.7	A	pch001.pht-hb.it
81.2.186.120	A+PTR	pch001.pht-hb.it
81.2.186.241	A	ns2.henn12.de
81.2.187.10	A	mail.embedded-tools.de
81.2.187.31	A	mail.gronau.de
81.2.187.155	A	kurzurlaub-dresden.de
81.2.187.155	A	kurzurlaub-muenchen.de
81.2.187.155	A	kurzurlaub-berlin.de
81.2.187.195	A	leightweightwheels.de
81.2.187.195	A	mail.leightweightwheels.de
81.2.187.195	A	leightweightwheels.com
81.2.187.226	A	dsonline.de
81.2.189.79	A+PTR	open6.net
81.2.189.162	PTR	mambo.familien-welt.de
81.2.189.162	A	skigebiete-oberbayern.de
81.2.189.162	A	mail.wintersport-schweden.de
81.2.190.135	A	real3a.xtb.com
81.2.190.136	A	real3b.xtb.com
81.2.190.138	A	demoa.xtb.com
81.2.190.144	A	ns1.henn12.de
81.2.190.157	A	xstation5.xtb.com
81.2.190.157	A	xstation.xtb.com
81.2.190.169	A	api5mobile.x-station.eu
81.2.190.176	A	xstation5.xtb.com
81.2.190.176	A	xstation.xtb.com
81.2.190.187	A	api5mobile.x-station.eu
81.2.190.204	A	vivatherm.it
81.2.190.226	A	barionet.net