Robtex

Up: 212.57.16.0/23
Can't show all results, try to descend to a more specific CIDR
Down left: 212.57.16.0/25
Down right: 212.57.16.128/25
(Some of the IP numbers are capped at 3 entries)

IP	Type	Hostname
212.57.16.1	PTR	asy1.asy16.tellcom.com.tr
212.57.16.11	PTR	asy11.asy16.tellcom.com.tr
212.57.16.56	PTR	host-212-57-16-56.reverse.superonline.net
212.57.16.56	A	smtp.remax-turkey.com
212.57.16.78	PTR	asy78.asy16.tellcom.com.tr
212.57.16.78	A	mail.nezih.com.tr
212.57.16.90	PTR	mail.teknoparkistanbul.com.tr
212.57.16.114	PTR	asy114.asy16.tellcom.com.tr
212.57.16.146	PTR	host-212-57-16-146.reverse.superonline.net
212.57.16.150	PTR	host-212-57-16-150.reverse.superonline.net
212.57.16.150	A	sezin.k12.tr
212.57.16.150	A	www.okulogic.com
212.57.16.165	A	img.teknosa.com
212.57.16.166	PTR	host-212-57-16-166.reverse.superonline.net
212.57.16.166	A	kliksa.com.tr
212.57.16.166	A	www.kliksa.com
212.57.16.184	A	www.teknosa.tc
212.57.16.184	A	teknosa.tc
212.57.16.188	PTR	asy188.asy16.tellcom.com.tr
212.57.16.188	A	iskenderun.iklimsa.com
212.57.16.194	PTR	mail.tadim.com.tr
212.57.16.246	A	nextstarmarket.com
212.57.16.250	PTR	next.com.tr
212.57.16.250	PTR	b.next.com.tr
212.57.16.250	PTR	mail.next.com.tr