Robtex

Up: 212.58.16.0/22
Can't show all results, try to descend to a more specific CIDR
Down left: 212.58.16.0/24
Down right: 212.58.17.0/24
(Some of the IP numbers are capped at 3 entries)

IP	Type	Hostname
212.58.16.0	PTR	net.doruk.net.tr
212.58.16.3	PTR	rev.3.16.58.212.doruk.net.tr
212.58.16.8	PTR	rev.8.16.58.212.doruk.net.tr
212.58.16.20	PTR	mail2.cevherdokum.com
212.58.16.20	A	mail2.ozyavuz.com
212.58.16.20	A	mail2.cevhergroup.com
212.58.16.58	PTR	rev.58.16.58.212.doruk.net.tr
212.58.16.58	A	mail.alparmetal.com.tr
212.58.16.138	PTR	mail.suholding.com.tr
212.58.16.138	A	mail.dss.web.tr
212.58.16.255	PTR	bcast.doruk.net.tr
212.58.17.0	PTR	net.doruk.net.tr
212.58.17.2	PTR	rev.2.17.58.212.doruk.net.tr
212.58.17.7	PTR	www.varan.com.tr
212.58.17.12	A	dns1.varan.com.tr
212.58.17.13	A	dns2.varan.com.tr
212.58.17.34	PTR	enersis.com.tr
212.58.17.37	A+PTR	mail.komtel.com.tr
212.58.17.37	A	mail.komteltech.com
212.58.17.37	A	mail.avstechnologies.com
212.58.17.58	PTR	rev.58.17.58.212.doruk.net.tr
212.58.17.58	A	thisisblab.com
212.58.17.58	A	www.deeper.la
212.58.17.59	PTR	rev.59.17.58.212.doruk.net.tr
212.58.17.59	A	easybe.at
212.58.17.65	PTR	tariszeytin.com.tr
212.58.17.66	PTR	tariszeytin.com.tr
212.58.17.67	PTR	tariszeytin.com.tr
212.58.17.68	PTR	tariszeytin.com.tr
212.58.17.69	PTR	tariszeytin.com.tr
212.58.17.70	A+PTR	mail.tariszeytin.com.tr
212.58.17.71	PTR	tariszeytin.com.tr
212.58.17.72	A+PTR	posta.tariszeytin.com.tr
212.58.17.73	A+PTR	edge.tariszeytin.com.tr
212.58.17.78	PTR	tariszeytin.com.tr
212.58.17.82	PTR	bisav.org.tr
212.58.17.84	PTR	forum.shiftdelete.net
212.58.17.85	PTR	bisav.org
212.58.17.90	A	sdxcrs.com
212.58.17.93	PTR	rev.93.17.58.212.doruk.net.tr
212.58.17.98	PTR	rev.98.17.58.212.doruk.net.tr
212.58.17.98	A	sip.ariatelekom.com
212.58.17.99	PTR	mail.alyans.com.tr
212.58.17.99	A	alyans.com.tr
212.58.17.99	A	www.alyans.com.tr
212.58.17.102	PTR	rev.102.17.58.212.doruk.net.tr
212.58.17.106	PTR	rev.106.17.58.212.doruk.net.tr
212.58.17.115	PTR	rev.115.17.58.212.doruk.net.tr
212.58.17.115	A	ignedeligigem.org
212.58.17.115	A	togprojehavuzu.com
212.58.17.122	PTR	ns3.ilbakholding.com.tr
212.58.17.126	PTR	mail.alyans.com.tr
212.58.17.170	PTR	mail.turcas.com.tr
212.58.17.177	PTR	isemarket.com.tr
212.58.17.190	PTR	mail.sodexho-tr.com
212.58.17.202	PTR	sbnsigorta.com.tr
212.58.17.203	PTR	mail.sbnsigorta.com.tr
212.58.17.232	PTR	mail.iletisim.com.tr
212.58.17.233	PTR	mail.iletisim.com.tr
212.58.17.234	PTR	mail.iletisim.com.tr
212.58.17.235	PTR	mail.iletisim.com.tr
212.58.17.236	PTR	mail.iletisim.com.tr
212.58.17.237	PTR	mail.iletisim.com.tr
212.58.17.238	PTR	mail.iletisim.com.tr
212.58.17.239	PTR	mail.iletisim.com.tr
212.58.17.240	PTR	mail.iletisim.com.tr
212.58.17.241	PTR	mail.iletisim.com.tr
212.58.17.242	PTR	mail.iletisim.com.tr
212.58.17.242	A	ns1.sentez.com
212.58.17.242	A	ns1.konfeksiyon-programi.com
212.58.17.243	PTR	mail.iletisim.com.tr
212.58.17.244	PTR	mail.iletisim.com.tr
212.58.17.244	A	finexglobal.ro
212.58.17.244	A	mail.sentezyazilim.com.tr
212.58.17.245	PTR	mail.iletisim.com.tr
212.58.17.246	PTR	mail.iletisim.com.tr
212.58.17.246	A	konfeksiyon-programi.com
212.58.17.246	A	sentezdestek.com
212.58.17.247	PTR	mail.iletisim.com.tr
212.58.17.248	PTR	mail.iletisim.com.tr
212.58.17.249	PTR	mail.iletisim.com.tr
212.58.17.249	A	tekstilprogrami.com
212.58.17.249	A	erp-programi.com
212.58.17.250	PTR	mail.iletisim.com.tr
212.58.17.251	PTR	mail.iletisim.com.tr
212.58.17.252	PTR	mail.iletisim.com.tr
212.58.17.253	PTR	mail.iletisim.com.tr
212.58.17.254	PTR	mail.iletisim.com.tr
212.58.17.255	PTR	bcast.doruk.net.tr