Robtex

Up: 84.51.2.0/23
Can't show all results, try to descend to a more specific CIDR
Down left: 84.51.3.0/25
Down right: 84.51.3.128/25
(Some of the IP numbers are capped at 3 entries)

IP	Type	Hostname
84.51.3.3	PTR	host-84-51-3-3.teletektelekom.com
84.51.3.4	PTR	host-84-51-3-4.teletektelekom.com
84.51.3.7	PTR	host-84-51-3-7.teletektelekom.com
84.51.3.8	PTR	host-84-51-3-8.teletektelekom.com
84.51.3.15	PTR	host-84-51-3-15.teletektelekom.com
84.51.3.16	PTR	host-84-51-3-16.teletektelekom.com
84.51.3.22	PTR	host-84-51-3-22.teletektelekom.com
84.51.3.23	PTR	host-84-51-3-23.teletektelekom.com
84.51.3.24	PTR	host-84-51-3-24.teletektelekom.com
84.51.3.105	PTR	host-84-51-3-105.teletektelekom.com
84.51.3.105	A	www.fitomer.com.tr
84.51.3.105	A	fitomer.com.tr
84.51.3.108	PTR	host-84-51-3-108.teletektelekom.com
84.51.3.115	PTR	host-84-51-3-115.teletektelekom.com
84.51.3.115	A	bezmialeminternational.com
84.51.3.115	A	bezmialemdragoshastanesi.com
84.51.3.130	A+PTR	ns1.teletektelekom.com
84.51.3.130	A	ns1.teletektelekom.net
84.51.3.130	A	ns1.gi.net.tr
84.51.3.131	A+PTR	ns2.teletektelekom.com
84.51.3.131	A	ns2.teletektelekom.net
84.51.3.131	A	ns2.gi.net.tr
84.51.3.132	PTR	webmail.teletektelekom.com
84.51.3.138	A	trafik.gi.com.tr
84.51.3.146	PTR	host-84-51-3-146.teletektelekom.com
84.51.3.146	A	ns1.anelnet.net
84.51.3.148	PTR	host-84-51-3-148.teletektelekom.com
84.51.3.148	A	anelsis.com.tr
84.51.3.148	A	aneldoga.com
84.51.3.198	PTR	host-84-51-3-198.teletektelekom.com
84.51.3.198	A	ns2.belsoft.com.tr
84.51.3.200	PTR	host-84-51-3-200.teletektelekom.com
84.51.3.200	PTR	belsoft.com.tr
84.51.3.200	PTR	mail.belsoft.com.tr
84.51.3.213	A	mx.crssoft.com.tr
84.51.3.216	PTR	smtp-rl02.sahibinden.com
84.51.3.231	PTR	host-84-51-3-231.teletektelekom.com
84.51.3.232	PTR	host-84-51-3-232.teletektelekom.com
84.51.3.235	PTR	host-84-51-3-235.teletektelekom.com
84.51.3.236	PTR	host-84-51-3-236.teletektelekom.com
84.51.3.239	PTR	host-84-51-3-239.teletektelekom.com
84.51.3.240	PTR	host-84-51-3-240.teletektelekom.com
84.51.3.247	PTR	host-84-51-3-247.teletektelekom.com
84.51.3.251	PTR	host-84-51-3-251.teletektelekom.com