Robtex

Up: 91.220.242.0/23
Can't show all results, try to descend to a more specific CIDR
Down left: 91.220.242.0/25
Down right: 91.220.242.128/25
(Some of the IP numbers are capped at 3 entries)

IP	Type	Hostname
91.220.242.10	A	vpn.eksen.com
91.220.242.70	PTR	mail.showtvnet.com
91.220.242.70	PTR	mail.skyturk360.com
91.220.242.70	A+PTR	mx1.showturk.tv
91.220.242.72	A	edgesrv01.showtv.com.tr
91.220.242.73	PTR	webmail.eksen.com
91.220.242.73	A+PTR	webmail.eksen.net
91.220.242.74	A	mail.show.com.tr
91.220.242.75	A+PTR	webmail.tvyd.org.tr
91.220.242.76	A+PTR	mail2.showtv.biz
91.220.242.76	PTR	mail2.showtvnet.com
91.220.242.76	PTR	mail2.skyturk360.com
91.220.242.78	A+PTR	admin.smstv.tv
91.220.242.78	A+PTR	mx1.smstv.tv