Robtex

Up: 1.72.16.0/20
Can't show all results, try to descend to a more specific CIDR
Down left: 1.72.24.0/22
Down right: 1.72.28.0/22

IP	Type	Hostname
1.72.24.2	A+PTR	mo1-72-24-2.air.mopera.net
1.72.24.67	A+PTR	mo1-72-24-67.air.mopera.net
1.72.25.2	A+PTR	mo1-72-25-2.air.mopera.net
1.72.25.178	A	ytcm.jp
1.72.27.2	PTR	mo1-72-27-2.air.mopera.net
1.72.29.61	PTR	u829061.xgsnun3.imtp.tachikawa.mopera.net