Robtex

Up: 173.85.48.0/20
Can't show all results, try to descend to a more specific CIDR
Down left: 173.85.48.0/22
Down right: 173.85.52.0/22

IP	Type	Hostname
173.85.48.38	A	173-85-48-38.dr03.crvl.il.frontiernet.net
173.85.53.33	A+PTR	173-85-53-33.dr03.crvl.il.frontiernet.net
173.85.55.150	A	173-85-55-150.dr03.crvl.il.frontiernet.net
173.85.55.222	A	173-85-55-222.dr03.crvl.il.frontiernet.net