Robtex

Up: 81.88.24.0/21
Can't show all results, try to descend to a more specific CIDR
Down left: 81.88.24.0/23
Down right: 81.88.26.0/23
(Some of the IP numbers are capped at 3 entries)

IP	Type	Hostname
81.88.24.2	A+PTR	81.88.24.2.static.alvotech.net
81.88.24.2	A	ugog.de
81.88.24.2	A	lord-darc.de
81.88.24.3	PTR	81.88.24.3.static.alvotech.net
81.88.24.12	A	mail.elvise.de
81.88.24.12	A	mail.job-poker.de
81.88.24.12	A	faircert.de
81.88.24.16	A+PTR	81.88.24.16.static.alvotech.net
81.88.24.16	A	mail.pdhq.de
81.88.24.16	A	pdhq.de
81.88.24.22	A	zarafa.ib-bludau.de
81.88.24.24	PTR	pheise.de
81.88.24.24	A	svenjaheise.de
81.88.24.24	A	ghost.pheise.de
81.88.24.25	PTR	inzone.ro
81.88.24.25	A	www.inauto.ro
81.88.24.25	A	inauto.ro
81.88.24.29	A	dataexpedition.net
81.88.24.29	A	mail.dataexpedition.net
81.88.24.29	A	mail.morbyte.net
81.88.24.34	A+PTR	thomster.ch
81.88.24.34	A	mail.thomster.ch
81.88.24.40	A+PTR	ns2.server-zone.net
81.88.24.40	A	ns2.outsource.de
81.88.24.43	PTR	web.transfunktionator.com
81.88.24.43	A	mail.desertgreening.net
81.88.24.46	A	81.88.24.46.static.alvotech.net
81.88.24.47	PTR	81.88.24.47.static.alvotech.net
81.88.24.48	A	www.colorscards.com
81.88.24.48	A	colorscards.com
81.88.24.48	A	parafarmaciacastelldefels.com
81.88.24.49	PTR	deviantdevelopment.de
81.88.24.49	A	deviant-development.de
81.88.24.57	A	tapdingo.de
81.88.24.58	A	81.88.24.58.static.alvotech.net
81.88.24.64	PTR	81.88.24.64.static.alvotech.net
81.88.24.66	A+PTR	81.88.24.66.static.alvotech.net
81.88.24.66	A	taico.me
81.88.24.67	A	pondersign.com
81.88.24.67	A	mail.pondersign.com
81.88.24.68	A	bgt-online.eu
81.88.24.68	A	bgt-online.com
81.88.24.69	PTR	mx.fritze.org
81.88.24.69	A	gesundheitsfocus.de
81.88.24.69	A	gesundheitsfocus.com
81.88.24.71	PTR	81.88.24.71.static.alvotech.net
81.88.24.73	A+PTR	81.88.24.73.static.alvotech.net
81.88.24.73	A	kreativkunst.at
81.88.24.73	A	mail.trackmania.eu
81.88.24.75	PTR	81.88.24.75.static.alvotech.net
81.88.24.76	A+PTR	81.88.24.76.static.alvotech.net
81.88.24.76	A	fr.zone-h.org
81.88.24.78	PTR	78.24.88.81
81.88.24.78	A	lebombo.nl
81.88.24.78	A	mail.lebombo.nl
81.88.24.84	A	andznet.de
81.88.24.88	PTR	mail.mlskids.de
81.88.24.88	A	mail.mlsit.eu
81.88.24.88	A	mail.mlsmedia.de
81.88.24.92	A	chaoskontrolowany.net
81.88.24.95	A+PTR	81.88.24.95.static.alvotech.net
81.88.24.95	A	fozz.de
81.88.24.95	A	mail.fozz.de
81.88.24.98	PTR	sv02.hauslinux.de
81.88.24.100	A	mail.easybytes.de
81.88.24.100	A	easybytes.de
81.88.24.102	A	berlin-vesak.de
81.88.24.104	PTR	81.88.24.104.static.alvotech.net
81.88.24.104	A	mail.daraja.de
81.88.24.109	PTR	mr-pi.de
81.88.24.109	A	xrandr.de
81.88.24.109	A	mail.xn--suchemnner-v5a.de
81.88.24.117	A+PTR	spark.goras.net
81.88.24.117	A	mail.goras.net
81.88.24.117	A	goras.net
81.88.24.119	PTR	law-watch.de
81.88.24.121	A	urbster.de
81.88.24.123	PTR	test.kthx.at
81.88.24.123	A	s.mufff.in
81.88.24.129	A	k2hsolutions.fi
81.88.24.129	A	hakkanen.net
81.88.24.134	PTR	81.88.24.134.static.alvotech.net
81.88.24.135	A+PTR	cravegig.com
81.88.24.139	A	mail.afzaal.de
81.88.24.143	PTR	divvy.de
81.88.24.143	A	mail.flipmarket.net
81.88.24.143	A	flipmarket.net
81.88.24.144	A	mail.madheads.de
81.88.24.144	A	madheads.de
81.88.24.145	A+PTR	mx2.smart-mail.de
81.88.24.148	A+PTR	81.88.24.148.static.alvotech.net
81.88.24.148	A	xvx.at
81.88.24.148	A	familie-kormann.at
81.88.24.151	PTR	81.88.24.151.static.alvotech.net
81.88.24.155	PTR	alvo.fungus.at
81.88.24.155	A	fungus.at
81.88.24.155	A	meinelottozahlen.eu
81.88.24.160	A	mlsmail.de
81.88.24.160	A	webshop2go.de
81.88.24.163	PTR	81.88.24.163.static.alvotech.net
81.88.24.163	A	haselizolasyon.com
81.88.24.163	A	internetkitapcisi.com
81.88.24.171	A	vhosting.eu.org
81.88.24.171	A	lycanslab.com
81.88.24.171	A	dns.vhosting.eu.org
81.88.24.173	A+PTR	81.88.24.173.static.alvotech.net
81.88.24.175	A+PTR	81.88.24.175.static.alvotech.net
81.88.24.180	PTR	81.88.24.180.static.alvotech.net
81.88.24.180	A	tripp-it.de
81.88.24.180	A	freggedalic.de
81.88.24.181	PTR	81.88.24.181.static.alvotech.net
81.88.24.192	PTR	81.88.24.192.static.alvotech.net
81.88.24.192	A	de2.betamaster.us
81.88.24.194	A+PTR	charon.faked.org
81.88.24.199	A	ns1.bestgreek.info
81.88.24.199	A	ns2.bestgreek.info
81.88.24.200	A+PTR	81.88.24.200.static.alvotech.net
81.88.24.200	A	www.mahaon.com
81.88.24.200	A	*.mahaon.com
81.88.24.203	PTR	bold.claims
81.88.24.204	A+PTR	s1.xgme.de
81.88.24.207	PTR	hendrix.static.alvotech.net
81.88.24.207	A	keebota.com
81.88.24.211	PTR	server.weblow.de
81.88.24.211	A	go2handy.com
81.88.24.211	A	mail.go2handy.com
81.88.24.220	PTR	81.88.24.220.static.alvotech.net
81.88.24.220	A	freetop5.de
81.88.24.220	A	mail.itinteract.de
81.88.24.224	PTR	neu.jumbo.li
81.88.24.224	A	jumbo-mail.de
81.88.24.224	A	*.jumbo.li
81.88.24.230	A+PTR	dazong.org
81.88.24.230	A	*.dazong.org
81.88.24.230	A	hostmaster.dazong.org
81.88.24.234	PTR	81.88.24.234.static.alvotech.net
81.88.24.234	A	theappmakers.at
81.88.24.235	PTR	81.88.24.235.static.alvotech.net
81.88.24.235	A	mail.kreativsein.net
81.88.24.235	A	mail.bellana.at
81.88.24.237	PTR	81.88.24.237.static.alvotech.net
81.88.24.237	A	giersch.at
81.88.24.237	A	mail.giersch.at
81.88.24.245	A	diverseintensity.com
81.88.24.245	A	xperience-xcellence.com
81.88.25.2	PTR	81.88.25.2.static.alvotech.net
81.88.25.2	A	mail.kreativburg.mobi
81.88.25.2	A	traum-pfalz.de
81.88.25.10	A	casino-vinorant.de
81.88.25.10	A	mail.casino-vinorant.de
81.88.25.51	A	bigger-friends.co.uk
81.88.25.51	A	biggerfriends.es
81.88.25.51	A	biggerfriends.fr
81.88.25.79	PTR	81.88.25.79.static.alvotech.net
81.88.25.83	PTR	81.88.25.83.static.alvotech.net
81.88.25.100	PTR	81.88.25.100.static.alvotech.net
81.88.25.120	PTR	81.88.25.120.static.alvotech.net
81.88.25.216	PTR	81.88.25.216.static.alvotech.net