Robtex

Up: 212.12.128.0/19
Can't show all results, try to descend to a more specific CIDR
Down left: 212.12.128.0/21
Down right: 212.12.136.0/21
(Some of the IP numbers are capped at 3 entries)

IP	Type	Hostname
212.12.128.2	A	gayesokmen.com
212.12.128.2	A	despec.com.tr
212.12.128.2	A	permatik.com.tr
212.12.128.96	A	sharedsm.kocsistem.com.tr
212.12.131.25	PTR	mail.oos.com.tr
212.12.131.210	A	mailer7.kariyer.net
212.12.131.211	A	mailer8.kariyer.net
212.12.131.212	A	mailer9.kariyer.net
212.12.131.213	A+PTR	mailer10.kariyer.net
212.12.132.63	A	bimeksltd.com.tr
212.12.132.134	PTR	mail.erciyas.com.tr
212.12.132.200	PTR	mail.anatolialogistics.com.tr
212.12.133.20	A	bilfenlise.com
212.12.133.138	PTR	mail.bilser.com
212.12.134.54	PTR	kocnet-s-finansbank.koc.net
212.12.134.206	PTR	mail.netsis.com.tr
212.12.134.210	PTR	urlamail.netsis.com.tr
212.12.136.50	A+PTR	mail2.catoni.com.tr
212.12.136.52	A+PTR	istanbul2.catoni.com.tr
212.12.136.52	PTR	mail.catoni.com.tr
212.12.136.53	PTR	mail.catoni.com.tr
212.12.136.53	PTR	mail.rhenuscatoni.com.tr
212.12.136.54	PTR	mail.catoni.com.tr
212.12.136.54	PTR	mail.rhenuscatoni.com.tr
212.12.136.100	A+PTR	diex.daristanbul.com
212.12.136.100	PTR	owa.daristanbul.com
212.12.136.100	A	di.daristanbul.com
212.12.136.122	PTR	mail.darussafaka.k12.tr
212.12.137.3	PTR	fako.com.tr
212.12.137.10	PTR	fako.com.tr
212.12.137.15	PTR	fako.com.tr
212.12.137.19	PTR	mail.fako.com.tr
212.12.137.149	A	www.emlakcom.com
212.12.137.149	A	videoresim.com
212.12.137.149	A	emlakcom.com
212.12.137.243	PTR	mail.mintay.com.tr
212.12.137.243	PTR	mail.ravelli.com.tr
212.12.138.16	PTR	bodrum.amerikanhastanesi.org
212.12.138.16	A	www.americanhospitalistanbul.org
212.12.138.16	A	www.vkvsk.org
212.12.138.194	A	mail2.prim.com.tr
212.12.139.135	A	www.dominospizza.com.tr
212.12.139.141	PTR	mail.servetderi.com
212.12.139.141	PTR	mail.ovalar.com.tr
212.12.140.6	A	mail.indycon.com
212.12.140.6	A	mail.worldcontrolinternational.com
212.12.141.90	PTR	smtp2.pakgrp.com
212.12.142.6	A	mail.sittnak.com