Robtex

Up: 78.39.112.0/21
Can't show all results, try to descend to a more specific CIDR
Down left: 78.39.116.0/23
Down right: 78.39.118.0/23
(Some of the IP numbers are capped at 3 entries)

IP	Type	Hostname
78.39.116.3	PTR	yu.ac.ir
78.39.116.3	PTR	account.yu.ac.ir
78.39.116.3	A+PTR	agri.yu.ac.ir
78.39.116.4	A+PTR	ns2.yu.ac.ir
78.39.116.5	PTR	tell1.yu.ac.ir
78.39.116.5	A+PTR	tell2.yu.ac.ir
78.39.116.5	A+PTR	tell3.yu.ac.ir
78.39.116.6	PTR	exam.yu.ac.ir
78.39.116.6	PTR	tell.yu.ac.ir
78.39.116.9	PTR	pajoheshgaran-kb.ir
78.39.116.9	PTR	www.pajoheshgaran-kb.ir
78.39.116.10	A+PTR	dena.yu.ac.ir
78.39.116.10	A+PTR	mail.yu.ac.ir
78.39.116.10	A	webmail.yu.ac.ir