Robtex

Up: 213.74.56.0/21
Can't show all results, try to descend to a more specific CIDR
Down left: 213.74.56.0/23
Down right: 213.74.58.0/23
(Some of the IP numbers are capped at 3 entries)

IP	Type	Hostname
213.74.56.29	PTR	host-213-74-56-29.superonline.net
213.74.56.29	A	mail.apro.com.tr
213.74.56.37	PTR	mail.cayelibakir.com
213.74.56.37	A	mail2.cayelibakir.com
213.74.56.37	A	mail.cayelibakir.com.tr
213.74.56.130	PTR	mail.yalcinlar.com.tr
213.74.56.140	PTR	mail.sevil.com.tr
213.74.56.147	A+PTR	mail.dgs.com.tr
213.74.56.183	PTR	host-213-74-56-183.superonline.net
213.74.56.184	PTR	host-213-74-56-184.superonline.net
213.74.56.194	PTR	host-213-74-56-194.superonline.net
213.74.56.206	PTR	mail-tr.salans.com
213.74.56.206	A	mail.gamareklam.com
213.74.56.206	A	mail.teknoparkendustriyel.com.tr
213.74.56.221	PTR	mail.ntv.com.tr
213.74.56.222	PTR	webaccess.ntv.com.tr
213.74.56.225	A+PTR	www.kapitalfactoring.com.tr
213.74.56.225	A	srviis01.kapitalfaktoring.com.tr
213.74.56.225	A	kf.com.tr
213.74.56.226	PTR	www.kapitalfactoring.com.tr
213.74.56.228	PTR	mailsrv.kapitalfactoring.com.tr
213.74.56.228	A	srvexc01.kapitalfaktoring.com.tr
213.74.56.228	A	srvexc01.kf.com.tr
213.74.56.236	PTR	mail.samet.com.tr
213.74.56.236	PTR	smtist1.samet.com.tr
213.74.56.255	PTR	host-213-74-56-255.superonline.net
213.74.57.0	PTR	host-213-74-57-0.superonline.net
213.74.57.11	PTR	mail.mak-yol.com.tr
213.74.58.19	PTR	mail.aykor.com
213.74.58.242	PTR	exchange.alkagroup.com.tr
213.74.58.242	A	mail.3dlojistik.com.tr
213.74.58.243	A+PTR	mxexch.alkagroup.com.tr
213.74.58.246	PTR	host-213-74-58-246.superonline.net
213.74.58.246	A	alkainsaat.com.tr
213.74.59.27	PTR	smtpgw.khas.edu.tr
213.74.59.83	A	netasdns2.netas.com.tr
213.74.59.98	PTR	host-213-74-59-98.superonline.net
213.74.59.195	PTR	mail.mtddb.com.tr
213.74.59.195	A	www.edestek.com.tr
213.74.59.195	A	edestek.com.tr
213.74.59.198	A	mail.destek.as
213.74.59.211	A	mail.efe.com.tr
213.74.59.234	PTR	host-213-74-59-234.superonline.net
213.74.59.250	PTR	mail2.gedenlines.com
213.74.59.252	PTR	mail.gedenlines.com
213.74.59.253	PTR	karantina.gedenlines.com
213.74.59.253	A+PTR	mail.gedenlines.com
213.74.59.253	A+PTR	smtp.gedenlines.com