Robtex

Up: 140.228.56.0/21
Can't show all results, try to descend to a more specific CIDR
Down left: 140.228.60.0/23
Down right: 140.228.62.0/23

IP	Type	Hostname
140.228.60.11	A+PTR	vlan-60-011.onu.edu
140.228.60.45	A+PTR	vlan-60-045.onu.edu
140.228.61.81	A+PTR	vlan-61-081.onu.edu
140.228.62.183	A+PTR	vlan-62-183.onu.edu
140.228.63.50	A+PTR	vlan-63-050.onu.edu
140.228.63.155	A+PTR	vlan-63-155.onu.edu
140.228.63.252	A+PTR	vlan-63-252.onu.edu