Robtex

Up: 84.51.48.0/21
Can't show all results, try to descend to a more specific CIDR
Down left: 84.51.52.0/23
Down right: 84.51.54.0/23
(Some of the IP numbers are capped at 3 entries)

IP	Type	Hostname
84.51.52.60	PTR	host-84-51-52-60.teletektelekom.com
84.51.52.60	A	postgresqltr.com
84.51.52.60	A	ipsantralsepeti.com
84.51.52.94	PTR	host-84-51-52-94.teletektelekom.com
84.51.52.113	PTR	host-84-51-52-113.teletektelekom.com
84.51.52.136	PTR	host-84-51-52-136.teletektelekom.com
84.51.52.136	A	takimyildizipy.net
84.51.52.199	PTR	host-84-51-52-199.teletektelekom.com
84.51.52.199	A	mail.gnckrl.com
84.51.52.199	A	gnckrl.com
84.51.52.253	PTR	host-84-51-52-253.teletektelekom.com
84.51.52.253	A	sihirligemiler.com
84.51.52.253	A	baskayasu.com
84.51.52.254	PTR	host-84-51-52-254.teletektelekom.com
84.51.53.14	PTR	host-84-51-53-14.teletektelekom.com
84.51.53.14	A	mail.sertdemircelik.com.tr
84.51.53.246	PTR	host-84-51-53-246.teletektelekom.com
84.51.53.246	A	ns.jackrosebutik.com
84.51.53.246	A	ns.yuksekses.com
84.51.54.4	PTR	host-84-51-54-4.teletektelekom.com
84.51.54.4	A	ansiklopedi.tk
84.51.54.4	A	ecemusikidernegi.com
84.51.54.241	PTR	host-84-51-54-241.teletektelekom.com
84.51.54.241	A	reliablesprinklertr.com
84.51.54.250	PTR	host-84-51-54-250.teletektelekom.com
84.51.54.250	A	www.doga.com.tr
84.51.54.250	A	fmsmetalyapi.com
84.51.55.75	PTR	host-84-51-55-75.teletektelekom.com
84.51.55.144	PTR	host-84-51-55-144.teletektelekom.com
84.51.55.144	A	josephunter.com
84.51.55.207	PTR	host-84-51-55-207.teletektelekom.com
84.51.55.207	A	mail.yasinyavuzalp.com
84.51.55.241	PTR	host-84-51-55-241.teletektelekom.com