Robtex

Up: 81.30.0.0/19
Can't show all results, try to descend to a more specific CIDR
Down left: 81.30.16.0/21
Down right: 81.30.24.0/21
(Some of the IP numbers are capped at 3 entries)

IP	Type	Hostname
81.30.16.238	A+PTR	ns1.comeser.it
81.30.16.244	A+PTR	ns2.comeser.it
81.30.16.250	PTR	mail.comesermail.it
81.30.16.251	A	mail1.comesermail.it
81.30.16.252	A+PTR	mail2.comesermail.it
81.30.18.106	A	mail.territorium.org
81.30.18.106	A	mx.gfnuovetecnologie.it
81.30.18.106	A	gfnuovetecnologie.it
81.30.18.110	A	eurobearings.com
81.30.18.125	A	mx2.bertolisrl.eu
81.30.18.134	A	mail.lamm.it
81.30.18.139	A	mail2.aspdistrettofidenza.it
81.30.18.147	A	mail.emc2onlus.it
81.30.18.154	A	mail.lamm.it
81.30.18.213	A	mail.isiresearch.it
81.30.18.213	A	mail.isisementi.com
81.30.18.230	A	out.casone.it
81.30.19.35	A	w08exchipam.ipam-ingredienti.it
81.30.19.35	A	mail.ipam-ingredienti.it
81.30.19.54	A+PTR	mail3.calfspa.it
81.30.19.54	A	mail2.calfgroup.it
81.30.19.54	A	mail2.calfgroup.com
81.30.19.67	A+PTR	mail.gasai.it
81.30.19.67	A	gasai.it
81.30.19.67	A	dns.firstpoint.it
81.30.19.78	A	aau.it
81.30.19.81	A	aau.it
81.30.19.81	A	multisistema.it
81.30.19.81	A	uniarea.it
81.30.19.98	A	mail.foedus.eu
81.30.19.100	A	foedus.biz
81.30.19.106	A	mta.aliasblindate.com
81.30.19.106	A	mail.aliasblindate.com
81.30.19.130	A	adespa.it
81.30.19.132	A	posta.adespa.it
81.30.19.163	A+PTR	mail.emc2onlus.it
81.30.19.166	A	mail.netspheric.com
81.30.19.179	A	mail.cstrucks.net
81.30.19.179	A	cstrucks.net
81.30.19.187	A	mail2.bertocchi.com
81.30.21.11	A	altaprofumeriabl.com
81.30.21.11	A	dirkbybikkembergs.com
81.30.21.12	A	pmx01.perfumeholding.com
81.30.21.26	A+PTR	mail.royalprosciutti.it
81.30.21.27	A	mail.disossoservice.it
81.30.21.53	PTR	mail.agugiarofigna.com
81.30.21.53	A+PTR	mail2.agugiarofigna.com
81.30.21.106	A+PTR	antispam.gruppocgi.it
81.30.21.114	A	mail2.salvatorerobuschi.com
81.30.21.116	A	salvatorerobuschi.com
81.30.21.116	A	residencepalazzotoscani.it
81.30.21.116	A	srimmobiliare.it
81.30.21.131	A	mail2.copador.it
81.30.21.137	A	xcs2.copador.it
81.30.21.137	A	xcs2.bernifoods.it
81.30.21.140	A	www.copador.it
81.30.21.184	A	comeserlan.it
81.30.21.184	A	www.comeserlan.it
81.30.21.194	A	mx2.ortoqui.com
81.30.21.194	A	mx2.sintoniaitalia.it
81.30.21.198	A	mx3.retimedia.it
81.30.21.223	A	smtp2.emmequ.it
81.30.21.223	A	smtp.emmequ.it
81.30.21.238	A+PTR	smtp.synthesis-spa.com
81.30.21.244	A	gadgetgroup.it
81.30.21.245	A	smtp.gadgetgroup.it
81.30.22.18	A+PTR	mail.hdg.it
81.30.22.18	A	server.hdg.it
81.30.22.29	A	mail.ffautomazioni.it
81.30.22.43	A	mail2.rodolfimansueto.com
81.30.22.50	PTR	host050.pool22.customers.comeser.it
81.30.22.50	A	mail.lmi-srl.it
81.30.22.68	A	mail.immduomo.it
81.30.22.68	A	immduomo.it
81.30.22.86	A	mail.ipindustrie.com
81.30.22.98	A	mail.cometal.it
81.30.22.121	A	posta2.itservice-web.it
81.30.22.121	A	posta2.ravazzoni.it
81.30.22.121	A	posta2.itservice-web.com
81.30.22.129	A+PTR	posta.ermetika.net
81.30.22.135	A	mx2.negoziocherie.it
81.30.22.149	A	mail.comeser.it
81.30.22.154	A	remote.atlanticanet.net
81.30.22.162	A	mail2.redipane.com
81.30.22.162	A	mail2.redipane.it
81.30.22.162	A	mail2.tagliavini.it
81.30.22.181	A	www.comeser.it
81.30.22.181	A	comeser.com
81.30.22.181	A	www.comeser.com
81.30.22.203	A	mail.molinograssi.it
81.30.22.203	A	mail2.molinograssi.it
81.30.22.218	A	mail.mag-data.com
81.30.22.218	A	magdata.eu
81.30.22.218	A	mag-data.it
81.30.22.236	A	mail2.misurinasma.it
81.30.22.236	A	mail2.operadiocesanasanbernardo.it
81.30.23.3	A	mail.unigenit.it
81.30.23.22	A	server.digigraphparma.it
81.30.23.33	A	simapr.net
81.30.23.33	A	remote.simapr.it
81.30.23.33	A	mail.simapr.net
81.30.23.38	A+PTR	smtp.tecnoceam.com
81.30.23.62	A	smtp.h2onaturizzata.com
81.30.23.90	A+PTR	mx01.zanelli.com
81.30.23.90	A	server.zanellimix.it
81.30.23.91	A	zanelli.com
81.30.23.163	A	server02.valcom.it
81.30.23.163	A	mx1.valcom.it
81.30.23.164	A	mx1.spriano.it
81.30.23.166	A	srvposta.terranova-instruments.com
81.30.23.214	A	gstoccalmatto.it
81.30.23.214	A	racing28.it
81.30.23.214	A	racing28.com
81.30.23.236	A	servermail.settima.ru
81.30.23.236	A	servermail.settima.it
81.30.23.236	A	mail.settimausa.com
81.30.23.242	A+PTR	mail.mag-data.com
81.30.23.242	A	magdata.eu
81.30.23.242	A	mail.mag-data.eu
81.30.24.108	A	mail.schmetterling.it
81.30.24.140	A	mail.vetromeccanica.it
81.30.24.140	A	mail1.vetromeccanica.it
81.30.24.140	A	mail2.vetromeccanica.it
81.30.26.70	A+PTR	smtpmail.assitekmultimedia.com
81.30.26.70	A	mail.assitekmultimedia.com
81.30.26.98	A+PTR	mail.bmgastronomia.it
81.30.26.98	A	mail3.bmgastronomia.it
81.30.26.98	A	dns3.bmgastronomia.it
81.30.26.99	A	bmgastronomia.it
81.30.26.116	A+PTR	mail.transferoil.com
81.30.26.141	A	remote.barbutiebertinelli.com
81.30.26.146	A	mailinterna.sdsphysio.com
81.30.26.146	A	mailinterna.sdscosmetici.com
81.30.26.146	A	mail.sdsphysio.com
81.30.26.219	A	mail3.allglass.it
81.30.27.4	A	mail2.thermoking.it
81.30.27.23	A	mail.termoblok.com
81.30.27.36	A+PTR	mail.spottisergio.it
81.30.27.52	PTR	mail.desktop.it
81.30.27.52	A	serverbk.desktop.it
81.30.27.52	A	mx3.ghizzonispa.com
81.30.27.142	A+PTR	mail2.sanpololamiere.it
81.30.27.156	A	mail.egt.it
81.30.27.222	A	mail.effegidi.it
81.30.27.226	A	mail.effeciparma.com
81.30.27.226	A	posta.effeciparma.com
81.30.28.123	A+PTR	remote2.mpgamma.com
81.30.29.56	A	mail2.ccdp.it