Robtex

Up: 87.21.0.0/18
Can't show all results, try to descend to a more specific CIDR
Down left: 87.21.32.0/20
Down right: 87.21.48.0/20

IP	Type	Hostname
87.21.32.60	A	host60-32-dynamic.21-87-r.retail.telecomitalia.it
87.21.34.162	A+PTR	host162-34-dynamic.21-87-r.retail.telecomitalia.it
87.21.36.104	A	www.portalefrecce.it
87.21.36.104	A	portalefrecce.it
87.21.39.75	A	host75-39-dynamic.21-87-r.retail.telecomitalia.it
87.21.39.77	A	host77-39-dynamic.21-87-r.retail.telecomitalia.it
87.21.40.57	A	host57-40-dynamic.21-87-r.retail.telecomitalia.it
87.21.41.226	A	host226-41-dynamic.21-87-r.retail.telecomitalia.it
87.21.42.202	A	host202-42-dynamic.21-87-r.retail.telecomitalia.it
87.21.45.58	A	host58-45-dynamic.21-87-r.retail.telecomitalia.it
87.21.45.230	A	host230-45-dynamic.21-87-r.retail.telecomitalia.it
87.21.46.173	A	host173-46-dynamic.21-87-r.retail.telecomitalia.it
87.21.49.28	A	host28-49-dynamic.21-87-r.retail.telecomitalia.it
87.21.49.93	A	makxs.com
87.21.49.93	A	mail.makxs.com
87.21.49.227	A+PTR	host227-49-dynamic.21-87-r.retail.telecomitalia.it
87.21.52.3	A+PTR	host3-52-dynamic.21-87-r.retail.telecomitalia.it
87.21.52.22	A	host22-52-dynamic.21-87-r.retail.telecomitalia.it
87.21.52.233	A	host233-52-dynamic.21-87-r.retail.telecomitalia.it
87.21.54.94	A	host94-54-dynamic.21-87-r.retail.telecomitalia.it
87.21.58.51	A	host51-58-dynamic.21-87-r.retail.telecomitalia.it
87.21.59.35	A+PTR	host35-59-dynamic.21-87-r.retail.telecomitalia.it
87.21.59.70	A	host70-59-dynamic.21-87-r.retail.telecomitalia.it
87.21.59.163	A	host163-59-dynamic.21-87-r.retail.telecomitalia.it
87.21.59.207	A	host207-59-dynamic.21-87-r.retail.telecomitalia.it
87.21.59.227	A	host227-59-dynamic.21-87-r.retail.telecomitalia.it
87.21.62.92	A	host92-62-dynamic.21-87-r.retail.telecomitalia.it
87.21.62.241	A	host241-62-dynamic.21-87-r.retail.telecomitalia.it
87.21.63.222	A	host222-63-dynamic.21-87-r.retail.telecomitalia.it