Robtex

Up: 212.58.14.0/23
Can't show all results, try to descend to a more specific CIDR
Down left: 212.58.15.0/25
Down right: 212.58.15.128/25
(Some of the IP numbers are capped at 3 entries)

IP	Type	Hostname
212.58.15.0	PTR	net.doruk.net.tr
212.58.15.2	PTR	mail.arestankers.com
212.58.15.4	PTR	mail.kardemir.com.tr
212.58.15.11	PTR	rev.11.15.58.212.doruk.net.tr
212.58.15.18	PTR	mail.pegasus.com.tr
212.58.15.20	PTR	rev.20.15.58.212.doruk.net.tr
212.58.15.20	A	brother.com.tr
212.58.15.21	PTR	rev.21.15.58.212.doruk.net.tr
212.58.15.21	A	brotherturkiye.com.tr
212.58.15.42	PTR	mail.kalekilit.com.tr
212.58.15.50	PTR	rev.50.15.58.212.doruk.net.tr
212.58.15.50	A	kargonet.com.tr
212.58.15.51	PTR	mail.tasfiyeemlak.com
212.58.15.52	PTR	rev.52.15.58.212.doruk.net.tr
212.58.15.52	A	ns1.cvplus.com.tr
212.58.15.52	A	www.secretcv.com.tr
212.58.15.83	PTR	mail2.kentshipping.com
212.58.15.83	A	sailtrade.com
212.58.15.83	A	mail.sailtrade.com
212.58.15.130	PTR	rev.130.15.58.212.doruk.net.tr
212.58.15.130	A	tradeplus.com.tr
212.58.15.130	A	saglamfikir.com
212.58.15.134	PTR	rev.134.15.58.212.doruk.net.tr
212.58.15.134	A	ktkutup.com
212.58.15.134	A	ktkutup.com.tr
212.58.15.138	PTR	mail.era-arch.com
212.58.15.163	A	carsitatil2.doruk.net.tr
212.58.15.164	A	carsibeymen.doruk.net.tr
212.58.15.179	PTR	rev.179.15.58.212.doruk.net.tr
212.58.15.180	PTR	rev.180.15.58.212.doruk.net.tr
212.58.15.180	A	hrf.tr.nato.int
212.58.15.180	A	hrf.tu.nato.int
212.58.15.181	A+PTR	ayyildiz1.hrf.tr.nato.int
212.58.15.181	A	ayyildiz1.hrf.tu.nato.int
212.58.15.182	A+PTR	ayyildiz2.hrf.tr.nato.int
212.58.15.182	A	ayyildiz2.hrf.tu.nato.int
212.58.15.183	PTR	rev.183.15.58.212.doruk.net.tr
212.58.15.187	PTR	technotoday.com.tr
212.58.15.207	A	modeo.com.tr
212.58.15.209	PTR	mail.palmali.com
212.58.15.210	PTR	mail.palmali.com
212.58.15.220	PTR	mail.ataktasit.com.tr
212.58.15.255	PTR	bcast.doruk.net.tr