Robtex

Up: 88.81.160.0/19
Can't show all results, try to descend to a more specific CIDR
Down left: 88.81.176.0/21
Down right: 88.81.184.0/21
(Some of the IP numbers are capped at 3 entries)

IP	Type	Hostname
88.81.176.10	A+PTR	posta1.fisep.com
88.81.176.18	A+PTR	mx1.growermetal.it
88.81.177.78	A	mail.besana.it
88.81.177.219	PTR	mail2.ftrspa.it
88.81.177.251	A	mail.puntosistemi.com
88.81.178.56	A	sinetrica.it
88.81.178.60	A	hostmail.sinetrica.it
88.81.178.60	A	mail.sinetrica.it
88.81.178.75	A	servizi.rhiag.com
88.81.178.79	A	relay1.gruppotrade.it
88.81.178.79	A	mail.pramerica.it
88.81.178.82	A+PTR	mailrelay.pi-cube.it
88.81.178.82	A	mailrelay.gruppotrade.it
88.81.178.82	A	mail.tradecomputer.it
88.81.178.85	PTR	dhmail.datahouse.it
88.81.178.103	A	www.revaluta.it
88.81.178.144	A	mail.autoscuolaranieri.com
88.81.178.144	A	mail.autoscuolaranieri.it
88.81.178.144	A	autoscuolaranieri.com
88.81.178.153	A	prolocoistrana.it
88.81.178.160	A	wwi.it
88.81.178.171	PTR	chs7780.atgita.com
88.81.178.171	A	mail.careitaly.com
88.81.178.171	A	mail.careitaly.it
88.81.178.172	A	www.sharefineco.it
88.81.178.185	PTR	chs4179.atgita.com
88.81.178.185	A	stilefranciacorta.it
88.81.178.185	A	bcentric.ch
88.81.179.84	A	wan-siram-ip.siram-mpls.easynet.it
88.81.179.90	PTR	mx.linkode.net
88.81.179.90	A	mail.auroradesio.it
88.81.179.90	A	mx1.auroradesio.it
88.81.179.103	A	mail.oktafonia.com
88.81.179.103	A	mail.tecnostrategie.it
88.81.179.104	A	oktafonia.com
88.81.179.104	A	lavorabile.com
88.81.179.112	A	prodotticonsilia.com
88.81.179.123	A+PTR	dns2.easynet.it
88.81.179.124	A+PTR	solvente.easynet.it
88.81.179.145	A+PTR	ctc-dev.ctcplus.it
88.81.179.146	A+PTR	ctc-fe1.ctcplus.it
88.81.179.148	A	ctc-ftp1.ctcplus.it
88.81.179.151	A	ctc-stage2.ctcplus.it
88.81.179.172	A	smtp3.aquafil.com
88.81.179.172	A	smtp.aquafil.com
88.81.179.174	A	smtp1.aquafil.com
88.81.180.16	A	mx2.ispadue.it
88.81.180.56	A	mail2.viaggiatlante.com
88.81.181.26	A+PTR	mail.centromarca.it
88.81.181.99	PTR	mail.infasrl.it
88.81.181.131	A+PTR	mail.viatek.it
88.81.181.131	A	mail1.viatek.it
88.81.181.174	A+PTR	relay1.mediolanumresidence.it
88.81.182.149	PTR	mail.casped.it
88.81.182.187	A	mx.studioaspesi-arsuffi.it
88.81.183.90	A	desio.hstudi.it
88.81.183.100	PTR	mail.salvadorispinotti.it
88.81.183.100	A	mx2.salvadorispinotti.it
88.81.183.150	A	mail.coiver.it
88.81.183.187	A	mail2.amikitalia.com
88.81.183.187	A	mail2.amikitalia.it
88.81.183.204	A	mx.salvadorispinotti.it
88.81.183.204	A	mail.salvadorispinotti.it
88.81.185.62	PTR	mail.magia3.it
88.81.185.170	A	mx2.mecolpress.com
88.81.185.178	A	barbantinilucca.com
88.81.185.178	A	mail.barbantinilucca.com
88.81.185.250	PTR	mail.giamminola.it
88.81.189.22	A	*.bluesoftonline.net
88.81.189.22	A	mail.bluesoftonline.net
88.81.189.22	A	serverdedicati.info
88.81.189.69	A	allbackuponline.com
88.81.189.70	A	mailsrv.hidromec.it
88.81.189.72	A	mail.alcamobile.com
88.81.189.72	A	alcamobile.info
88.81.189.74	PTR	mail.goonart.it
88.81.189.80	A+PTR	it-chs01.mailboxcleaner.net
88.81.189.80	A	mailsrv.spazioinrete.net
88.81.189.80	A	mailsrv.tortuga.ws
88.81.189.105	A+PTR	chs6073.cloudprivateservice.com
88.81.189.105	PTR	mail.syferconsulting.com
88.81.189.105	A	mx2.vectormm.com
88.81.189.106	A	welcomeexpo2015.com
88.81.189.107	A	webadministrator.it
88.81.189.117	A	kjdata.no
88.81.189.195	A	*.inaer.it
88.81.189.195	A	inaer.it
88.81.189.199	PTR	mail.progesoft.com
88.81.189.205	A	yaoteq.eu
88.81.189.205	A	mail.yaoteq.eu
88.81.189.211	PTR	posta.foxprice.it
88.81.189.229	A	dambrosio.eu
88.81.190.5	A+PTR	mxspt1.bitservice.it
88.81.190.11	PTR	mailha1.bitservice.it
88.81.190.11	A	mail.runnercommunity.com
88.81.190.11	A	mail.sancresci.org
88.81.190.13	PTR	mailha2.bitservice.it
88.81.190.13	A	mail.runnercommunity.com
88.81.190.13	A	mail.sancresci.org
88.81.190.16	PTR	ftp.pozzielecta.it
88.81.190.16	A+PTR	www.pozzielecta.it
88.81.190.16	A	siapec.it
88.81.190.211	A+PTR	www.bertosalotti.it
88.81.190.215	A	bertosalotti.at
88.81.190.216	A	bertosalotti.es
88.81.190.218	A	bertosalotti.fr
88.81.190.229	A	www.brianza.com
88.81.190.231	PTR	www.kenwoodstore.it
88.81.190.231	A	kenwoodstore.mobi
88.81.190.232	PTR	web01.netgang.it
88.81.190.232	A	mail.aspergillosi.it
88.81.190.232	A	mail.robotmania.it
88.81.191.83	A+PTR	baule.dips.it
88.81.191.84	A+PTR	vfirewall.dips.it
88.81.191.198	A+PTR	webmail.eks.it
88.81.191.198	A	mail.reggiani.it
88.81.191.198	A	posta.reggiani.it
88.81.191.199	PTR	antispam.sinetrica.it
88.81.191.199	A	mail.eks.it
88.81.191.206	A	voice.euraxess.org
88.81.191.208	A	voice.euraxess.org
88.81.191.237	A	annuariabionline.it
88.81.191.239	A	usagstore.it
88.81.191.240	A	www.usag.it
88.81.191.240	A	www.pastorino.it
88.81.191.241	A	reggiani.it
88.81.191.241	A	scminox.com