Robtex

Up: 81.201.96.0/21
Can't show all results, try to descend to a more specific CIDR
Down left: 81.201.100.0/23
Down right: 81.201.102.0/23
(Some of the IP numbers are capped at 3 entries)

IP	Type	Hostname
81.201.100.47	A	entmail13.mwe.com
81.201.100.120	A	topmanagerteam.eu
81.201.100.124	A	topmanagerteam.net
81.201.100.140	A	router01.de.lifesensor.com
81.201.100.143	PTR	record.us.lifesensor.com
81.201.100.163	A	origin-emea-wildcard.allegiancetech.com
81.201.100.163	A	inquisiteasp.dk
81.201.100.163	A	e-server.dk
81.201.100.177	A	pwebapi2.at.lifesensor.com
81.201.100.230	A	europe.forticloud.com
81.201.101.3	PTR	www.pentahotels.com
81.201.101.5	PTR	www.pentahotels.com
81.201.101.34	A	gerwanserver.de
81.201.101.34	A	mail.buschtiger.de
81.201.101.34	A	buschtiger.de
81.201.101.37	A	*.webprovider.net
81.201.101.37	A	dehost2.webprovider.net
81.201.101.37	A	smapartner.webprovider.net
81.201.101.45	A	vhost-101-45.gerwan.de
81.201.101.48	A	mail.lps-group.de
81.201.101.164	PTR	sat1dating.de
81.201.101.164	PTR	tnx1.de
81.201.101.193	A	redbus-ffm-gw.dis-ag.de
81.201.101.194	A	frankfurt2-rt-dis.dis-ag.de
81.201.101.196	PTR	gw101196-eu.fortimail.com
81.201.101.196	A	f01diagffm.dis-ag.de
81.201.101.197	A	f02diagffm.dis-ag.de
81.201.101.198	A+PTR	fdiagffm.dis-ag.de
81.201.101.200	A+PTR	gw101200-eu.fortimail.com
81.201.101.201	A	gw101201-eu.fortimail.com
81.201.101.201	A	f01enxffm.dis-ag.de
81.201.101.202	A	f02enxffm.dis-ag.de
81.201.101.205	A+PTR	gw101205-eu.fortimail.com
81.201.101.205	A	mailgw4.dis-ag.de
81.201.101.207	A	office-award.info
81.201.101.207	A	www.timeandmore.de
81.201.101.209	A+PTR	mailgw5.dis-ag.com
81.201.101.212	A+PTR	gw101212-eu.fortimail.com
81.201.101.213	PTR	gw101213-eu.fortimail.com
81.201.101.214	PTR	gw101214-eu.fortimail.com
81.201.101.214	A	portal.dis.ag
81.201.101.215	PTR	gw101215-eu.fortimail.com
81.201.101.215	A	freemail.dis.ag
81.201.101.216	A+PTR	freemail.euro-engineering.com
81.201.101.216	A	mail.euro-engineering.com
81.201.101.217	A	wi03.dis.ag
81.201.101.218	A+PTR	webmail.euro-engineering.de
81.201.101.219	PTR	webmail.euro-engineering.com
81.201.101.220	A+PTR	sync.euro-engineering.com
81.201.101.221	A	euro-engineering-aerospace.com
81.201.101.221	A	euro-engineering-aerospace.de
81.201.101.221	A	dis-ag.net
81.201.101.224	A	jobs.euro-engineering.de
81.201.101.228	A+PTR	webmail.dis-ag.com
81.201.101.228	A	webmail.dis-ag.de
81.201.101.229	A	sync.dis-ag.com
81.201.101.233	PTR	g1adc-frnk-de.fw.telefonica.de
81.201.101.237	PTR	gw101237-eu.fortimail.com
81.201.101.240	A+PTR	mailgw3.dis-ag.de
81.201.101.241	A	whatsup.dis-ag.com
81.201.102.127	PTR	ae39.dis01.he3.eu.equinix.net
81.201.103.20	A	mx0.prozessplattform.de
81.201.103.20	A	mx20.310k.de
81.201.103.20	A	mx0.verwaltungswelt.de
81.201.103.33	A	kedrion-international.eu
81.201.103.33	A	androidy.de
81.201.103.33	A	webler.at
81.201.103.59	A	sexyflirter.com
81.201.103.62	A	mail.mypeopls.com
81.201.103.66	A	bikeaction-shop.de
81.201.103.82	A	realschhule.nordenham.de
81.201.103.82	A	mail-nordenham.de
81.201.103.82	A	*.nordenham.de
81.201.103.86	A	*.goethebuch.de
81.201.103.86	A	xn--buchsttze24-yhb.de
81.201.103.86	A	9basketball.goethebuch.de
81.201.103.93	A	allianz-bewerbung.de
81.201.103.99	A	www.single-fever.net
81.201.103.99	A	treffen-heute.de
81.201.103.99	A	experdate.de
81.201.103.103	A	vhost-103-103.vhosts.internet1.de
81.201.103.104	A	vhost-103-104.vhosts.internet1.de
81.201.103.110	A	kellerbau.org
81.201.103.119	A	*.freundorfer.de
81.201.103.119	A	*.kinderzahnaerzte.com
81.201.103.130	A	mail.hkvweb.de
81.201.103.130	A	hkvweb.de
81.201.103.130	A	mail.donner-bank-ag.de
81.201.103.140	A	golf4you.eu
81.201.103.143	A	server-trace.de
81.201.103.143	A	mail.homepage-vermarkter.de
81.201.103.143	A	mail.homepagevermarkter.de
81.201.103.144	A	*.opel-opc.de
81.201.103.144	A	opel-opc.de
81.201.103.144	A	mail.opel-opc.de
81.201.103.158	A	mail.samsunggames.de
81.201.103.158	A	samsungboard.de
81.201.103.158	A	nfdev.de
81.201.103.164	A	fmpress.de
81.201.103.171	A	tixedia.ch
81.201.103.171	A	tixedia-konzertkarten.de
81.201.103.171	A	tixedia.org
81.201.103.179	A	inmotus.de
81.201.103.204	A	dibisg.ch
81.201.103.213	A	www.fachberater24.com
81.201.103.225	A	cloudlearning.de
81.201.103.239	A	image-direct.biz
81.201.103.241	A	formmed.at
81.201.103.241	A	gen-stoffwechsel-analyse.info
81.201.103.242	A	formmed.info
81.201.103.242	A	form-med.com
81.201.103.245	A	find-your-diet.de
81.201.103.245	A	findedeinediaet.ch
81.201.103.245	A	finde-deine-di.de