Robtex

Up: 81.24.224.0/21
Can't show all results, try to descend to a more specific CIDR
Down left: 81.24.224.0/23
Down right: 81.24.226.0/23
(Some of the IP numbers are capped at 3 entries)

IP	Type	Hostname
81.24.224.1	PTR	dns.ifinet.it
81.24.224.1	A	mbox.sandemetriosas.net
81.24.224.1	A	mbox.sergiotacchini.com
81.24.224.2	PTR	dns2.ifinet.it
81.24.224.3	PTR	www.ifinet.it
81.24.224.4	PTR	webreport.ifinet.it
81.24.224.4	A	orbisflora.it
81.24.224.4	A	www.comac-spa.com
81.24.224.9	A+PTR	webtrends.ifinet.it
81.24.224.10	A+PTR	idscenter.ifinet.it
81.24.224.10	A	srvprtg.ifinet.it
81.24.224.12	A+PTR	chat.ifinet.it
81.24.224.16	A+PTR	smtp.ifinet.it
81.24.224.18	PTR	nms.ifinet.it
81.24.224.21	A	webmail.pkf.it
81.24.224.112	A+PTR	interscan.ifinet.it
81.24.224.112	A	mail1.ifinet.it
81.24.224.115	A	webreport.ifinet.it
81.24.224.130	A	provider-1.ifinet.it
81.24.224.200	A	sitemanager.ifinet.it
81.24.225.83	A	mbox.supertosano.com
81.24.225.106	PTR	mail.eurospin.it
81.24.225.138	A	videoconferenza.cartoramagroup.com
81.24.225.139	PTR	adsl-sime.ifinet.it
81.24.226.9	A+PTR	nat.ifinet.it
81.24.226.10	A	nat.pkf.it
81.24.227.2	PTR	mbox.lefablier.it
81.24.227.49	PTR	fw-a.sime.it
81.24.227.54	PTR	adsl-sime.ifinet.it
81.24.227.55	PTR	www.sime.it
81.24.227.66	PTR	www.anarb.it
81.24.227.114	A+PTR	mbox.quarellaspa.com
81.24.227.131	A+PTR	mail.casagrande.vr.it
81.24.227.138	A	dns4.ifinet.it
81.24.227.162	A	mbox.merlinlegno.it
81.24.227.194	A	dns2.ifinet.com
81.24.227.196	A	mbox.veronesi.com
81.24.227.196	A	domino.gruppoveronesi.com
81.24.227.199	A	mail.supertosano.com
81.24.227.203	A	mbox.veronesi.it
81.24.227.219	PTR	mail.swinger.it
81.24.227.225	PTR	nat.pedron.it