Robtex

Up: 194.225.40.0/21
Can't show all results, try to descend to a more specific CIDR
Down left: 194.225.40.0/23
Down right: 194.225.42.0/23

IP	Type	Hostname
194.225.40.5	PTR	homa.sharif.ac.ir
194.225.40.6	PTR	eram.sharif.ac.ir
194.225.40.11	PTR	aria.schoolnet.ir
194.225.40.12	PTR	mehr.sharif.edu
194.225.40.13	PTR	aria.schoolnet.ir
194.225.40.17	PTR	sina.sharif.edu
194.225.40.18	PTR	ftp.sharif.edu
194.225.40.31	PTR	physics.sharif.edu
194.225.40.33	PTR	mech.sharif.edu
194.225.40.34	PTR	ee.sharif.edu
194.225.40.35	PTR	che.sharif.edu
194.225.40.39	PTR	ae.sharif.edu
194.225.40.48	A+PTR	router.sharif.ac.ir
194.225.40.57	PTR	sima.sharif.ac.ir
194.225.40.100	PTR	ce.sharif.ac.ir
194.225.40.115	PTR	che.sharif.ac.ir
194.225.40.143	PTR	ien.sharif.ac.ir
194.225.42.38	PTR	aictc5.sharif.edu
194.225.42.195	PTR	aictc16.sharif.edu
194.225.42.242	PTR	bamdad.org
194.225.42.242	PTR	gilas.bamdad.org
194.225.43.48	PTR	router.sharif.ac.ir
194.225.43.71	PTR	eecc.sharif.ac.ir