Robtex

Up: 144.74.200.0/21
Can't show all results, try to descend to a more specific CIDR
Down left: 144.74.200.0/23
Down right: 144.74.202.0/23

IP	Type	Hostname
144.74.201.2	A+PTR	ap1230a-6west.oakpark.rpslmc.edu
144.74.201.101	A+PTR	prtop6w1t2ls.rush.edu
144.74.201.101	A+PTR	prtop6w1t3ls.rush.edu
144.74.201.111	A+PTR	ap1230d-5west.oakpark.rpslmc.edu
144.74.201.151	A+PTR	prtop5c1t2ls.rush.edu
144.74.201.151	A+PTR	prtop5c1t3ls.rush.edu