Robtex

Up: 80.252.20.0/23
Can't show all results, try to descend to a more specific CIDR
Down left: 80.252.20.0/25
Down right: 80.252.20.128/25
(Some of the IP numbers are capped at 3 entries)

IP	Type	Hostname
80.252.20.0	PTR	rev-80-252-20-0.global63.net
80.252.20.2	A+PTR	ns2.global63.net
80.252.20.2	A	ns2.pmn.ru
80.252.20.2	A	ns2.sgppk.ru
80.252.20.63	PTR	rev-80-252-20-63.global63.net
80.252.20.64	PTR	rev-80-252-20-64.global63.net
80.252.20.66	PTR	rev-80-252-20-66.global63.net
80.252.20.67	PTR	rev-80-252-20-67.global63.net
80.252.20.68	PTR	rev-80-252-20-68.global63.net
80.252.20.112	PTR	rev-80-252-20-112.global63.net
80.252.20.127	PTR	rev-80-252-20-127.global63.net
80.252.20.128	PTR	rev-80-252-20-128.global63.net
80.252.20.159	PTR	rev-80-252-20-159.global63.net
80.252.20.160	PTR	rev-80-252-20-160.global63.net