Robtex

Up: 220.159.64.0/19
Can't show all results, try to descend to a more specific CIDR
Down left: 220.159.64.0/21
Down right: 220.159.72.0/21

IP	Type	Hostname
220.159.72.16	PTR	mo220-159-72-16.mopera.ne.jp
220.159.72.17	PTR	mo220-159-72-17.mopera.ne.jp
220.159.72.34	PTR	mo220-159-72-34.mopera.ne.jp
220.159.72.82	PTR	mo220-159-72-82.mopera.ne.jp
220.159.72.113	PTR	mo220-159-72-113.mopera.ne.jp
220.159.72.147	PTR	mo220-159-72-147.mopera.ne.jp
220.159.73.0	PTR	mo220-159-73-0.mopera.ne.jp
220.159.73.1	PTR	mo220-159-73-1.mopera.ne.jp
220.159.73.18	PTR	mo220-159-73-18.mopera.ne.jp
220.159.73.52	PTR	mo220-159-73-52.mopera.ne.jp
220.159.73.64	PTR	mo220-159-73-64.mopera.ne.jp
220.159.73.98	PTR	mo220-159-73-98.mopera.ne.jp
220.159.73.114	PTR	mo220-159-73-114.mopera.ne.jp
220.159.73.194	PTR	mo220-159-73-194.mopera.ne.jp