Robtex

Up: 193.0.252.0/22
Can't show all results, try to descend to a more specific CIDR
Down left: 193.0.254.0/24
Down right: 193.0.255.0/24
(Some of the IP numbers are capped at 3 entries)

IP	Type	Hostname
193.0.254.34	A	mail.omik.org
193.0.254.36	A	mail-relay-out.omik.org
193.0.254.41	A	proxy.omik.org
193.0.254.50	A+PTR	masq.omik.org
193.0.255.1	PTR	e0-44-r3.thn.telecomplete.net
193.0.255.1	A	ns1.manastirea-budapesta.ro
193.0.255.1	A	ns1.mobtop.ro
193.0.255.17	PTR	gig-1-3-r5.thn.telecomplete.net
193.0.255.130	PTR	ns2.telecomplete.net
193.0.255.204	A	r1.sn-x5ntoxu-ajte.c.2mdn.net
193.0.255.204	A	r1---sn-x5ntoxu-ajte.gvt1.com
193.0.255.204	A	r1.sn-x5ntoxu-ajte.googlevideo.com
193.0.255.205	A	r2.sn-x5ntoxu-ajte.c.2mdn.net
193.0.255.206	A	r3.sn-x5ntoxu-ajte.c.2mdn.net
193.0.255.206	A	r3.sn-x5ntoxu-ajte.gvt1.com
193.0.255.206	A	r3.sn-x5ntoxu-ajte.c.android.clients.google.com
193.0.255.245	PTR	loopback.lns3.thn.telecomplete.net
193.0.255.245	A	lns3.thn.telecomplete.net
193.0.255.252	A	r2.thn.telecomplete.net
193.0.255.255	PTR	reserved-classful.telecomplete.net