Robtex

Up: 192.52.240.0/23
Can't show all results, try to descend to a more specific CIDR
Down left: 192.52.240.0/25
Down right: 192.52.240.128/25
(Some of the IP numbers are capped at 3 entries)

IP	Type	Hostname
192.52.240.213	PTR	planetlab1.cs.pitt.edu
192.52.240.213	A	cuemaster.org.http.l2.l1.l0.nyucd.net
192.52.240.213	A	*.muratbaris.com.tr.tt.http.l2.l1.l0.nyucd.net
192.52.240.214	PTR	planetlab2.cs.pitt.edu
192.52.240.214	A	*.biensavvy.eu.http.l2.l1.l0.nyucd.net
192.52.240.214	A	rtsakwc.ca.http.l2.l1.l0.nyucd.net