Robtex

Up: 190.10.168.0/21
Can't show all results, try to descend to a more specific CIDR
Down left: 190.10.172.0/23
Down right: 190.10.174.0/23

IP	Type	Hostname
190.10.172.26	PTR	26.190-10-172.uio.satnet.net
190.10.173.21	PTR	21.190-10-173.uio.satnet.net
190.10.175.16	PTR	16.190-10-175.uio.satnet.net
190.10.175.38	PTR	38.190-10-175.uio.satnet.net
190.10.175.86	PTR	86.190-10-175.uio.satnet.net
190.10.175.177	PTR	177.190-10-175.uio.satnet.net