Robtex

Up: 84.51.30.0/23
Can't show all results, try to descend to a more specific CIDR
Down left: 84.51.30.0/25
Down right: 84.51.30.128/25
(Some of the IP numbers are capped at 3 entries)

IP	Type	Hostname
84.51.30.4	A+PTR	web.gi.net.tr
84.51.30.4	A	gi.net.tr
84.51.30.4	A	www.polmak.com.tr
84.51.30.5	PTR	mail.ulkerbilgi.com
84.51.30.5	PTR	mail.gi.net.tr
84.51.30.5	A	mail.teletektelekom.net
84.51.30.6	PTR	ns2.gi.net.tr
84.51.30.8	PTR	www.foreveristanbul.com
84.51.30.8	A	infiniticenteristanbul.com
84.51.30.8	A	www.tirekutsan.com.tr
84.51.30.27	A	smtp.globaliletisim.com.tr
84.51.30.27	A	astra-zeneca.com.tr
84.51.30.28	PTR	host-84-51-30-28.teletektelekom.com
84.51.30.31	PTR	host-84-51-30-31.teletektelekom.com
84.51.30.32	PTR	host-84-51-30-32.teletektelekom.com
84.51.30.39	PTR	host-84-51-30-39.teletektelekom.com
84.51.30.40	PTR	host-84-51-30-40.teletektelekom.com
84.51.30.47	PTR	host-84-51-30-47.teletektelekom.com
84.51.30.48	PTR	host-84-51-30-48.teletektelekom.com
84.51.30.55	PTR	testvmrc2.gi.com.tr
84.51.30.56	PTR	testcloud2.gi.com.tr
84.51.30.59	PTR	host-84-51-30-59.teletektelekom.com
84.51.30.60	PTR	host-84-51-30-60.teletektelekom.com
84.51.30.63	PTR	host-84-51-30-63.teletektelekom.com
84.51.30.64	PTR	host-84-51-30-64.teletektelekom.com
84.51.30.71	PTR	host-84-51-30-71.teletektelekom.com
84.51.30.72	PTR	host-84-51-30-72.teletektelekom.com
84.51.30.79	PTR	host-84-51-30-79.teletektelekom.com
84.51.30.80	PTR	host-84-51-30-80.teletektelekom.com
84.51.30.87	PTR	host-84-51-30-87.teletektelekom.com
84.51.30.88	PTR	host-84-51-30-88.teletektelekom.com
84.51.30.91	PTR	host-84-51-30-91.teletektelekom.com
84.51.30.92	PTR	host-84-51-30-92.teletektelekom.com
84.51.30.100	PTR	host-84-51-30-100.teletektelekom.com
84.51.30.100	A	api.emailing.mesaj160.com
84.51.30.106	PTR	host-84-51-30-106.teletektelekom.com
84.51.30.106	A	mesaj160.com
84.51.30.106	A	mail.mesaj160.com
84.51.30.115	PTR	host-84-51-30-115.teletektelekom.com
84.51.30.128	PTR	host-84-51-30-128.teletektelekom.com