Robtex

Up: 217.11.80.0/20
Can't show all results, try to descend to a more specific CIDR
Down left: 217.11.80.0/22
Down right: 217.11.84.0/22
(Some of the IP numbers are capped at 3 entries)

IP	Type	Hostname
217.11.80.2	A+PTR	dns.easyasp.it
217.11.80.2	A	dns.mlink.it
217.11.80.2	A	ns.multilinkitalia.it
217.11.80.3	PTR	lysa.easyasp.it
217.11.80.18	PTR	jenny.bestkevin.com
217.11.80.19	A+PTR	lenna.easyasp.it
217.11.80.19	A	dns2.multilink.net
217.11.80.19	A	dns2.mlink.it
217.11.80.193	PTR	lynn.br1.com
217.11.80.194	PTR	isn1.infosysnet.net
217.11.80.202	A	alfamac.it
217.11.80.202	A	cdf2008.it
217.11.80.202	A	gambariitalia.it
217.11.80.204	A	terapiaiperbarica.com
217.11.80.204	A	elettrotl.it
217.11.81.17	A	itsverona.com
217.11.81.17	A	scuola.salesianiverona.it
217.11.81.17	A	slimteam.it
217.11.81.29	A	mail.bel.it
217.11.81.34	A	gambariitalia.it
217.11.81.34	A	bertagni.it
217.11.81.34	A	terapiaiperbarica.com
217.11.81.53	A	ceramichesanmichele.com
217.11.81.53	A	elettrotl.it
217.11.81.53	A	www.faccisnc.it
217.11.81.73	PTR	mx2.serviziinformaticisrl.it
217.11.81.73	A+PTR	mx.edconsultsrl.it
217.11.81.73	A	mail.serviziinformaticisrl.it
217.11.81.177	A	backupmx.multilink.net
217.11.81.188	A	usiofnorthamerica.com
217.11.81.188	A	mx1.vrtv.it
217.11.81.188	A	mx.casechiuse.eu
217.11.84.98	PTR	mail.multilinkfriuli.net
217.11.84.100	A	mail.multilinkfriuli.net
217.11.84.170	A	fratellipazzaglia.com
217.11.84.170	A	fratellipazzaglia.it
217.11.84.170	A	www.fratellipazzaglia.com
217.11.84.171	A+PTR	mail.fratellipazzaglia.com
217.11.85.46	PTR	mail.ilfriuli.it
217.11.86.210	A+PTR	sbs.newbrands.it
217.11.87.187	PTR	mx1.newbrands.it
217.11.87.187	A	mx1.giannipiras.com