Robtex

Up: 213.243.4.0/23
Can't show all results, try to descend to a more specific CIDR
Down left: 213.243.5.0/25
Down right: 213.243.5.128/25
(Some of the IP numbers are capped at 3 entries)

IP	Type	Hostname
213.243.5.3	PTR	ns1.abcmedya.com.tr
213.243.5.4	PTR	mail.abcmedya.com.tr
213.243.5.7	PTR	mail.abcmedya.com.tr
213.243.5.98	PTR	mail1.designfactory.ag
213.243.5.98	PTR	mail1.petroenergy.biz
213.243.5.98	PTR	mail.alpet.com
213.243.5.99	PTR	mail1.alpet.com
213.243.5.99	A+PTR	www.altinbasbilgisayar.com
213.243.5.99	PTR	www.alyap.com
213.243.5.100	PTR	mail2.alpet.com
213.243.5.100	PTR	mail2.ceoforex.com
213.243.5.100	A+PTR	mail2.eragold.com
213.243.5.102	PTR	mail.designfactory.ag
213.243.5.102	PTR	mail.petroenergy.biz
213.243.5.102	PTR	mail2.alpet.com
213.243.5.103	A	mail3.alpetmadeniyaglari.com
213.243.5.103	A	mail3.merapiogi.com
213.243.5.103	A	mail3.alpet.com.tr
213.243.5.104	A	www.altinbasholding.com