Robtex

Up: 89.255.80.0/21
Can't show all results, try to descend to a more specific CIDR
Down left: 89.255.80.0/23
Down right: 89.255.82.0/23

IP	Type	Hostname
89.255.80.0	PTR	cisco.serpuhov
89.255.80.58	PTR	obl80-58.80.255.89.in-addr.arpa
89.255.80.200	PTR	lob1.iola-k.com
89.255.80.200	PTR	lob1.iola-k.ru
89.255.83.186	A+PTR	mail.juice.ru
89.255.83.186	A	juice.ru
89.255.83.186	A	www.juice.ru
89.255.83.188	A+PTR	mx5.mail10.net
89.255.83.255	PTR	obl83-255.83.255.89.in-addr.arpa