Robtex

Up: 80.191.168.0/21
Can't show all results, try to descend to a more specific CIDR
Down left: 80.191.172.0/23
Down right: 80.191.174.0/23

IP	Type	Hostname
80.191.172.4	A	ns2.usb.ac.ir
80.191.172.7	A+PTR	sonbol.usb.ac.ir
80.191.172.12	A	vpn1srv5.usb.ac.ir
80.191.172.14	A+PTR	taftan.usb.ac.ir
80.191.172.15	A+PTR	webmail.usb.ac.ir
80.191.172.20	A	vu2.usb.ac.ir
80.191.172.22	A+PTR	wsrv.usb.ac.ir
80.191.172.22	A	waterdamagechandler.us
80.191.172.22	A	lib.usb.ac.ir
80.191.172.23	PTR	w2.usb.ac.ir
80.191.172.23	PTR	usb.ac.ir
80.191.172.69	A	sada.usb.ac.ir
80.191.172.75	A+PTR	journals.usb.ac.ir
80.191.172.75	A	jeps.usb.ac.ir
80.191.174.3	A	srvexchange2.oshidaco.ir
80.191.174.4	A	mail.zaums.ac.ir
80.191.174.7	A	zaums.ac.ir
80.191.174.7	A	www.zaums.ac.ir
80.191.174.111	A	ns1.zaums.ac.ir
80.191.175.66	A	sb-agrijahad.ir