Robtex

Up: 220.159.0.0/17
Can't show all results, try to descend to a more specific CIDR
Down left: 220.159.64.0/19
Down right: 220.159.96.0/19

IP	Type	Hostname
220.159.73.0	PTR	mo220-159-73-0.mopera.ne.jp
220.159.73.1	PTR	mo220-159-73-1.mopera.ne.jp
220.159.73.64	PTR	mo220-159-73-64.mopera.ne.jp
220.159.73.194	PTR	mo220-159-73-194.mopera.ne.jp
220.159.120.123	A	ns1.access.mopera.biz
220.159.120.131	A	ns2.access.mopera.biz