Robtex

Up: 217.221.56.0/21
Can't show all results, try to descend to a more specific CIDR
Down left: 217.221.60.0/23
Down right: 217.221.62.0/23

IP	Type	Hostname
217.221.60.28	A	mail.metalcastello.com
217.221.61.42	PTR	mail.fondazionetoscanini.it
217.221.61.121	PTR	217-221-61-121-static.albacom.net
217.221.61.226	PTR	217-221-61-226-static.albacom.net
217.221.61.226	A	ftp3.geloparma.it
217.221.63.71	PTR	217-221-63-71-static.albacom.net
217.221.63.88	PTR	217-221-63-88-static.albacom.net