Robtex

Up: 84.51.30.0/23
Can't show all results, try to descend to a more specific CIDR
Down left: 84.51.31.0/25
Down right: 84.51.31.128/25
(Some of the IP numbers are capped at 3 entries)

IP	Type	Hostname
84.51.31.7	PTR	host-84-51-31-7.teletektelekom.com
84.51.31.8	PTR	host-84-51-31-8.teletektelekom.com
84.51.31.15	PTR	host-84-51-31-15.teletektelekom.com
84.51.31.16	PTR	host-84-51-31-16.teletektelekom.com
84.51.31.21	PTR	host-84-51-31-21.teletektelekom.com
84.51.31.21	A	mail.trtdoc.com
84.51.31.23	PTR	host-84-51-31-23.teletektelekom.com
84.51.31.24	PTR	host-84-51-31-24.teletektelekom.com
84.51.31.31	PTR	host-84-51-31-31.teletektelekom.com
84.51.31.35	PTR	host-84-51-31-35.teletektelekom.com
84.51.31.37	PTR	host-84-51-31-37.teletektelekom.com
84.51.31.37	A	lykiaresort.com
84.51.31.37	A	lykiahotel.com
84.51.31.39	PTR	mail.dataport.com.tr
84.51.31.40	PTR	host-84-51-31-40.teletektelekom.com
84.51.31.40	A	dataport.com.tr
84.51.31.40	A	ns1.dataport.com.tr
84.51.31.45	PTR	host-84-51-31-45.teletektelekom.com
84.51.31.45	A	ns1.istcrm.com
84.51.31.46	PTR	host-84-51-31-46.teletektelekom.com
84.51.31.53	A	turbomesaj.com
84.51.31.54	PTR	host-84-51-31-54.teletektelekom.com
84.51.31.54	A	jtibenimbayim.com
84.51.31.57	A	unlubook.com
84.51.31.60	PTR	cp.istcrm.com
84.51.31.60	A	hakantetik.com
84.51.31.60	A	mail.tumisconsulting.com
84.51.31.61	PTR	mail.dataport.com.tr
84.51.31.62	A	turbomesaj.com
84.51.31.98	PTR	host-84-51-31-98.teletektelekom.com
84.51.31.102	A	modafit.com
84.51.31.116	PTR	host-84-51-31-116.teletektelekom.com
84.51.31.116	A	finansalegitim.gov.tr
84.51.31.180	PTR	host-84-51-31-180.teletektelekom.com