Robtex

Up: 89.19.0.0/23
Can't show all results, try to descend to a more specific CIDR
Down left: 89.19.0.0/25
Down right: 89.19.0.128/25
(Some of the IP numbers are capped at 3 entries)

IP	Type	Hostname
89.19.0.0	PTR	89-19-0-0.cizgi.net.tr
89.19.0.2	PTR	bd-0-1-gd.cizgibilgisayar.com
89.19.0.13	PTR	border01-mt03.cizgi.net.tr
89.19.0.14	A+PTR	mt03.cizgibilgisayar.com
89.19.0.20	PTR	sw3.natro.com
89.19.0.21	PTR	sw4.natro.com
89.19.0.22	PTR	sw5.natro.com
89.19.0.23	PTR	sw6.natro.com
89.19.0.24	PTR	sw7.natro.com
89.19.0.25	PTR	sw8.natro.com
89.19.0.28	PTR	sw11.natro.com
89.19.0.66	PTR	89-19-0-66.ip.yapyonet.com
89.19.0.67	PTR	mail.yapyonet.com
89.19.0.73	PTR	erkyazilim.com.tr
89.19.0.89	PTR	89-19-0-89.cizgi.net.tr
89.19.0.142	PTR	89-19-0-142.cizgi.net.tr
89.19.0.157	PTR	89-19-0-157.cizgi.net.tr
89.19.0.184	PTR	89-19-0-184.cizgi.net.tr
89.19.0.186	PTR	adapazarinet.com
89.19.0.188	PTR	reseller.natrohost.com
89.19.0.189	PTR	reseller.natrohost.com
89.19.0.189	A	mail.umutdolu.net
89.19.0.189	A	mail.boilerprices.net
89.19.0.196	PTR	89-19-0-196.cizgi.net.tr
89.19.0.199	PTR	89-19-0-199.cizgi.net.tr
89.19.0.202	PTR	e-pazarturk.com
89.19.0.212	PTR	89-19-0-212.cizgi.net.tr
89.19.0.213	PTR	cluster07.natrohost.com
89.19.0.213	A	mx2.3kisilerloop.com
89.19.0.213	A	mx2.anmyapim.com
89.19.0.214	PTR	cluster07.natrohost.com
89.19.0.214	A	mail.gardenyapaspas.com
89.19.0.214	A	mail.personelport.com
89.19.0.215	A	mx2.gencfatih.org
89.19.0.215	A	mx1.gencfatih.org
89.19.0.215	A	mx2.adasenicagiriyor.com
89.19.0.216	PTR	cluster04.natrohost.com
89.19.0.216	A	mail.ozlemumut.com
89.19.0.216	A	mail.toramakina.com
89.19.0.217	PTR	cluster04.natrohost.com
89.19.0.217	A	mx2.dmsmakine.com
89.19.0.217	A	mx1.elizgroup.com
89.19.0.220	A	mx2.yachtconsult-tr.com
89.19.0.220	A	mx1.yachtconsult-tr.com
89.19.0.236	PTR	89-19-0-236.cizgi.net.tr
89.19.0.237	PTR	cluster06.natrohost.com
89.19.0.237	A	mx1.emlakport.com
89.19.0.237	A	dc-aed4c4aa-mx2.webtasarimi.com
89.19.0.238	PTR	cluster06.natrohost.com
89.19.0.238	A	mail.plasglas.com
89.19.0.238	A	mail.arnica.com.tr
89.19.0.244	PTR	89-19-0-244.cizgi.net.tr
89.19.0.244	A	mx1.akilcireklam.com
89.19.0.245	PTR	cluster05.natrohost.com
89.19.0.245	A	mx1.akilcireklam.com
89.19.0.245	A	mx1.peridotcv.com
89.19.0.246	PTR	cluster05.natrohost.com
89.19.0.246	A	mail.deltayapi.net
89.19.0.246	A	mail.arzinsaat.com
89.19.0.247	PTR	reseller.natrohost.com
89.19.0.247	A	mail.olcumimarlik.com
89.19.0.247	A	mail.salihagaoglu.com
89.19.0.248	PTR	cluster03.natrohost.com
89.19.0.248	A	mail.yereluretyereltuket.com
89.19.0.248	A	mail.cemkatextile.com
89.19.0.249	PTR	cluster03.natrohost.com
89.19.0.249	A	mx1.emekisdemir.com
89.19.0.249	A	mx1.eks.com.tr
89.19.0.250	PTR	cluster.natrohost.com
89.19.0.250	A	mx2.dalidaceramic.com
89.19.0.250	A	mx1.eskisehirzen.com
89.19.0.251	PTR	cluster.natrohost.com
89.19.0.251	A	mx2.teotasarim.com
89.19.0.251	A	mx2.kordontip.com
89.19.0.252	PTR	cluster.natrohost.com
89.19.0.252	A	mail.edirneaskf.com
89.19.0.252	A	mx1.ornekol.com
89.19.0.253	PTR	reseller.natrohost.com
89.19.0.253	A	mail.dydyapiurunleri.com
89.19.0.253	A	mail.finfect.com
89.19.0.254	PTR	89-19-0-254.cizgi.net.tr
89.19.0.255	PTR	89-19-0-255.cizgi.net.tr