Robtex

Up: 217.26.64.0/19
Can't show all results, try to descend to a more specific CIDR
Down left: 217.26.80.0/21
Down right: 217.26.88.0/21
(Some of the IP numbers are capped at 3 entries)

IP	Type	Hostname
217.26.81.35	PTR	mbox.expertsystem.it
217.26.81.35	A	mail5.expertsystem.it
217.26.81.35	A	mx.expertsystem.net
217.26.81.44	PTR	smtp.expertsystem.it
217.26.81.86	A	aynet.it
217.26.81.133	A+PTR	mail.nextopeninnovation.it
217.26.81.133	A	mail.nextinnovation.it
217.26.81.133	A	mail.nextim.it
217.26.81.134	A	widgetmail.xaltia.it
217.26.81.138	PTR	mail.bms.eng.it
217.26.81.145	A+PTR	mail.officeonhand.it
217.26.81.154	A+PTR	kcbms.engbms.it
217.26.81.154	A	ex.engbms.it
217.26.81.165	A	mail.bernabe.it
217.26.81.165	A	pop3.bernabe.it
217.26.81.168	A	timgatecoll-public.engds.it
217.26.81.177	A+PTR	mail.esef-eu.com
217.26.81.177	A	mgmcoll.engbms.it
217.26.81.182	A	cert1.engbms.it
217.26.81.203	A	mail.promel.it
217.26.83.73	A	mail.bucher.it
217.26.83.73	A	mail.bucherschoerling.it
217.26.83.73	A	bsiveicoli.it
217.26.83.145	PTR	pool-sat145-83.pool21726.interbusiness.it
217.26.84.142	A	heinzaeschlimann.com
217.26.87.10	A+PTR	dns-ext.telespazio.it
217.26.87.10	A	dns-ext.telespazio.com
217.26.87.11	A	ext.telespazio.com
217.26.87.13	A	ftp.telespazio.com
217.26.87.16	A+PTR	sftp.telespazio.it
217.26.87.17	A	elearning.telespazio.it
217.26.87.19	A+PTR	webservice.telespazio.it
217.26.87.20	A	t-intranet.telespazio.it
217.26.87.32	A+PTR	geodb.telespazio.it
217.26.87.32	A	realvista.it
217.26.87.33	A+PTR	gee.e-geos.it
217.26.87.36	A+PTR	catalogue.telespazio.it
217.26.87.60	A+PTR	mx4.telespazio.com
217.26.87.61	PTR	mx1.telespazio.com
217.26.87.61	A	mx1.telespazio.it
217.26.87.61	A	smtp.newapplication.it
217.26.87.62	A+PTR	mx2.telespazio.com
217.26.87.64	PTR	ssl.telespazio.com
217.26.87.73	A+PTR	customercare.telespazio.it
217.26.87.81	A+PTR	portal.telespazio.it
217.26.87.152	A+PTR	mail.telespazio.com
217.26.89.81	A+PTR	host81-89-static.26-217-b.business.telecomitalia.it
217.26.89.81	A	mailhost.progettocalabria.it
217.26.89.81	A	mondrian.sgol.it
217.26.89.103	A	afrimeds.com
217.26.89.104	A	infomobility.it
217.26.89.104	A	host104-89-static.26-217-b.business.telecomitalia.it
217.26.89.104	A	infomobility.eu
217.26.89.170	A	host170-89-static.26-217-b.business.telecomitalia.it
217.26.89.200	A	mail1.albisnw.com
217.26.89.200	A	host200-89-static.26-217-b.business.telecomitalia.it
217.26.89.241	A+PTR	host241-89-static.26-217-b.business.telecomitalia.it
217.26.90.81	PTR	h51.z2690.infracom.it
217.26.90.138	A	mail.mtcitalia.com
217.26.90.138	A	ftp.mtcitalia.com
217.26.91.35	A	mail.me4eu.com
217.26.91.101	A	apawebsat.ccata.com
217.26.95.84	A	smtp.guabello.it