Robtex

Up: 87.28.0.0/18
Can't show all results, try to descend to a more specific CIDR
Down left: 87.28.32.0/20
Down right: 87.28.48.0/20
(Some of the IP numbers are capped at 3 entries)

IP	Type	Hostname
87.28.33.2	A	host2-33-static.28-87-b.business.telecomitalia.it
87.28.33.194	A+PTR	host194-33-static.28-87-b.business.telecomitalia.it
87.28.34.2	PTR	host2-34-static.28-87-b.business.telecomitalia.it
87.28.37.2	PTR	host2-37-static.28-87-b.business.telecomitalia.it
87.28.37.96	A	giseweb.it
87.28.39.1	A+PTR	host1-39-static.28-87-b.business.telecomitalia.it
87.28.40.209	A	mail.spiralflex.net
87.28.43.152	A	host152-43-static.28-87-b.business.telecomitalia.it
87.28.45.98	A	office.borromeaviaggi.it
87.28.46.76	A	studiozanco.com
87.28.46.179	A	host179-46-static.28-87-b.business.telecomitalia.it
87.28.47.198	A	host198-47-static.28-87-b.business.telecomitalia.it
87.28.48.9	A	mail.nrglex.com
87.28.48.9	A	mail.nardieroncelli.com
87.28.48.9	A	mail.nrlex.org
87.28.48.52	A	host52-48-static.28-87-b.business.telecomitalia.it
87.28.49.157	A	mail.arte-stampa.com
87.28.49.157	A	ftp.arte-stampa.com
87.28.50.20	A	host20-50-static.28-87-b.business.telecomitalia.it
87.28.53.45	A	mail.tecnodatasystem.it
87.28.53.45	A	mail.tecnodatasystem.eu
87.28.53.120	A	www.impresit.com
87.28.53.174	A	host174-53-static.28-87-b.business.telecomitalia.it
87.28.54.1	A+PTR	host1-54-static.28-87-b.business.telecomitalia.it
87.28.58.74	A	mail2.gatti-tex.it
87.28.58.74	A	mail2.gattitex.it
87.28.58.81	A	host81-58-static.28-87-b.business.telecomitalia.it
87.28.60.197	A	host197-60-static.28-87-b.business.telecomitalia.it
87.28.62.93	A	host93-62-static.28-87-b.business.telecomitalia.it
87.28.63.175	A	mx.open-executive.com