Robtex

Up: 1.79.40.0/21
Can't show all results, try to descend to a more specific CIDR
Down left: 1.79.44.0/23
Down right: 1.79.46.0/23

IP	Type	Hostname
1.79.44.6	PTR	u544006.xgsbs1.imtp.tachikawa.mopera.net
1.79.46.42	PTR	u546042.xgsbs2.imtp.tachikawa.mopera.net
1.79.46.102	A+PTR	u546102.xgsbs2.imtp.tachikawa.mopera.net
1.79.46.103	PTR	u546103.xgsbs2.imtp.tachikawa.mopera.net
1.79.46.132	PTR	u546132.xgsbs2.imtp.tachikawa.mopera.net
1.79.46.141	PTR	u546141.xgsbs2.imtp.tachikawa.mopera.net
1.79.46.174	PTR	u546174.xgsbs2.imtp.tachikawa.mopera.net
1.79.46.201	PTR	mo1-79-46-201.air.mopera.net
1.79.46.207	PTR	mo1-79-46-207.air.mopera.net
1.79.46.231	PTR	u546231.xgsbs2.imtp.tachikawa.mopera.net
1.79.46.233	PTR	u546233.xgsbs2.imtp.tachikawa.mopera.net
1.79.47.1	A+PTR	u547001.xgsbs2.imtp.tachikawa.mopera.net
1.79.47.3	A+PTR	mo1-79-47-3.air.mopera.net