Robtex

Up: 2.57.190.0/23
Can't show all results, try to descend to a more specific CIDR
Down left: 2.57.190.0/25
Down right: 2.57.190.128/25
(Some of the IP numbers are capped at 3 entries)

IP	Type	Hostname
2.57.190.15	PTR	eposta.atso.org.tr
2.57.190.15	PTR	mail.inovatso.org.tr
2.57.190.15	A+PTR	xmail.atso.org.tr
2.57.190.16	PTR	mail.antalyabilgisistemi.org.tr
2.57.190.16	PTR	mail.atsomesem.org.tr
2.57.190.16	PTR	xmail.atso.org.tr