Robtex

Up: 88.81.128.0/18
Can't show all results, try to descend to a more specific CIDR
Down left: 88.81.160.0/20
Down right: 88.81.176.0/20
(Some of the IP numbers are capped at 3 entries)

IP	Type	Hostname
88.81.160.18	A+PTR	mail.styleboiler.it
88.81.160.86	A+PTR	mail.lafabbrica.net
88.81.160.86	A	tempsmtp.lafabbrica.net
88.81.160.120	PTR	mail.gmssrl.com
88.81.161.90	PTR	aschei.cfw.easynet.it
88.81.161.107	A+PTR	mail.sinteco.com
88.81.161.132	A	mail.cela-it.com
88.81.161.202	PTR	tengelmann-cesena.ccm.easynet.it
88.81.162.26	A	asg.leuze.it
88.81.162.28	A+PTR	vpnssl.leuze.it
88.81.162.194	A+PTR	mail.elettronicarossoni.hk
88.81.162.194	A	pop.logofax.it
88.81.162.195	A	pop.logofax.it
88.81.163.76	A	domino01.faifiltri.it
88.81.163.78	PTR	domino01.faifiltri.it
88.81.163.187	PTR	mail.valplastick.com
88.81.163.187	PTR	mail.vesticolor.com
88.81.163.187	PTR	mail.atispa.it
88.81.164.140	PTR	sbrigati.parmasegreteria.it
88.81.164.203	A	mail.vagotex.it
88.81.165.75	A	mail.akraplast.it
88.81.165.166	A+PTR	mail.siges-mi.it
88.81.165.178	A	mx2.crastan.eu
88.81.165.178	A	mx1.crastan.eu
88.81.165.180	PTR	mail.vanoncini.it
88.81.165.180	A	domino01.vanoncini.it
88.81.166.20	A+PTR	mail.centralfin.it
88.81.166.34	A	mail.autoplusnetwork.com
88.81.166.83	A+PTR	mail.ftrspa.it
88.81.168.230	PTR	smtp.aquafil.com
88.81.170.132	PTR	posta.gruppogrt.com
88.81.171.124	A	smtp1.infocomsrl.it
88.81.171.235	A+PTR	mail.stopego.com
88.81.171.235	A	remote.stopego.com
88.81.171.235	A	mail.ristoramis.com
88.81.172.52	A+PTR	mail.amikitalia.it
88.81.172.52	A	mail.amikitalia.com
88.81.172.82	PTR	mail.marzoratironchetti.it
88.81.172.100	PTR	smtp.ellenaspa.com
88.81.172.131	PTR	web6.dominiofaidate.com
88.81.172.131	A	atelsrl.it
88.81.172.131	A	movingclub.it
88.81.172.133	PTR	web7.dominiofaidate.com
88.81.172.235	A	mail.fiaba.net
88.81.172.236	A+PTR	posta.fiaba.net
88.81.174.122	PTR	mail.cocoon.it
88.81.174.122	A	mail2.cocoon.it
88.81.175.251	A	mail.enoporto.com
88.81.175.251	A	mail.caseepalazzi.com
88.81.175.251	A	mail.casepalazzi.com
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
88.81.178.103	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
88.81.179.84	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
88.81.179.123	PTR	dns2.easynet.it
88.81.179.145	A+PTR	ctc-dev.ctcplus.it
88.81.179.146	A	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
88.81.189.105	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
88.81.189.195	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
88.81.189.229	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	PTR	www.pozzielecta.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
88.81.191.237	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