Robtex

Up: 213.74.48.0/22
Can't show all results, try to descend to a more specific CIDR
Down left: 213.74.50.0/24
Down right: 213.74.51.0/24
(Some of the IP numbers are capped at 3 entries)

IP	Type	Hostname
213.74.50.0	PTR	host-213-74-50-0.superonline.net
213.74.50.2	PTR	tele.net.tr
213.74.50.162	PTR	mail.marslogistics.com
213.74.50.162	PTR	mail.marsgroup.com.tr
213.74.50.162	PTR	mail.marslogistics.com.tr
213.74.51.83	PTR	artsistem.com
213.74.51.83	A	sensei.com.tr
213.74.51.83	A	artescorp.com
213.74.51.84	PTR	mail.artsistem.com
213.74.51.84	A	mail.pcbayi.com
213.74.51.84	A	mail.artsistem.com.tr
213.74.51.85	PTR	pcbayi.com
213.74.51.85	A	artesdestek.com
213.74.51.86	PTR	mail.pcbayi.com
213.74.51.86	A	ns1.pcbayi.net
213.74.51.101	PTR	host-213-74-51-101.superonline.net
213.74.51.101	A	dark.ist
213.74.51.101	A	ns1.froma.istanbul
213.74.51.102	A	ns2.froma.istanbul
213.74.51.146	PTR	posta.mopas.com.tr
213.74.51.146	A	posta.mopashipermarket.com
213.74.51.162	PTR	isaint.unitim.com.tr
213.74.51.162	A	webmail.unitim.com.tr
213.74.51.163	PTR	mail.imteks.com.tr
213.74.51.168	PTR	host-213-74-51-168.superonline.net
213.74.51.168	A	webmail2.unitim.com.tr
213.74.51.170	PTR	bullock.unitim.com.tr
213.74.51.171	A+PTR	tomcat.unitim.com.tr
213.74.51.171	A	www.accessorize-tr.com
213.74.51.171	A	www.tommyhilfiger.com.tr
213.74.51.178	A+PTR	mail.denka-as.com
213.74.51.178	A	mail.egemenerji.com
213.74.51.178	A	mail.britishsteelturkey.com
213.74.51.179	PTR	mail.coruscelik.com
213.74.51.180	PTR	host-213-74-51-180.superonline.net
213.74.51.251	PTR	host-213-74-51-251.superonline.net