Robtex

Up: 81.199.80.0/21
Can't show all results, try to descend to a more specific CIDR
Down left: 81.199.80.0/23
Down right: 81.199.82.0/23

IP	Type	Hostname
81.199.83.4	PTR	ns2.wia.co.tz
81.199.83.6	PTR	ftp.wianetwork.com
81.199.83.42	PTR	81.199.83.42.satcom-systems.net
81.199.83.75	PTR	81.199.83.75.satcom-systems.net
81.199.83.152	PTR	81.199.83.152.satcom-systems.net
81.199.83.177	PTR	81.199.83.177.satcom-systems.net
81.199.83.188	PTR	81.199.83.188.satcom-systems.net
81.199.83.192	PTR	81.199.83.192.satcom-systems.net