Robtex

Up: 216.174.48.0/20
Can't show all results, try to descend to a more specific CIDR
Down left: 216.174.48.0/22
Down right: 216.174.52.0/22

IP	Type	Hostname
216.174.48.15	PTR	arl04.jones.edu
216.174.48.39	PTR	ns2.jones.edu
216.174.48.40	PTR	ns.jones.edu
216.174.48.129	PTR	arl04.jones.edu
216.174.48.141	PTR	mail.jones.edu
216.174.48.142	PTR	mail.jones.edu
216.174.51.31	A	mail.rpmbuilding.com
216.174.51.31	A	antispam.rpmbuilding.com