Robtex

Up: 216.229.224.0/20
Can't show all results, try to descend to a more specific CIDR
Down left: 216.229.232.0/22
Down right: 216.229.236.0/22

IP	Type	Hostname
216.229.232.8	PTR	host-216-229-232-8.public.southern.edu
216.229.232.106	PTR	host-216-229-232-106.public.southern.edu
216.229.232.171	PTR	host-216-229-232-171.public.southern.edu
216.229.234.64	PTR	host-216-229-234-64.public.southern.edu
216.229.234.193	PTR	host-216-229-234-193.public.southern.edu
216.229.234.217	PTR	host-216-229-234-217.public.southern.edu
216.229.236.67	PTR	host-216-229-236-67.public.southern.edu
216.229.236.97	PTR	host-216-229-236-97.public.southern.edu
216.229.238.43	PTR	host-216-229-238-43.public.southern.edu
216.229.238.57	PTR	host-216-229-238-57.public.southern.edu
216.229.239.57	PTR	host-216-229-239-57.public.southern.edu