Robtex

Up: 46.36.120.0/21
Can't show all results, try to descend to a more specific CIDR
Down left: 46.36.124.0/23
Down right: 46.36.126.0/23
(Some of the IP numbers are capped at 3 entries)

IP	Type	Hostname
46.36.124.130	A	*.cfu.ac.ir
46.36.127.3	PTR	ns3.chmail.ir
46.36.127.3	A	ns3.virastyar.com
46.36.127.3	A	ns3.iteshop.ir
46.36.127.50	PTR	imap.chmail.ir
46.36.127.71	A	chbox.ir
46.36.127.72	PTR	mail.chaapaar.ir
46.36.127.111	PTR	mx1.tci.ir
46.36.127.112	PTR	mx2.tci.ir
46.36.127.116	A+PTR	mail.pgstp.ir
46.36.127.116	A	mail.pgcup.ir
46.36.127.119	A	pgstp.ir
46.36.127.119	A	pgcup.ir
46.36.127.198	PTR	mail.iauctb.ac.ir
46.36.127.214	PTR	mail.ihss.ac.ir
46.36.127.216	A	mail.virastyar.ir
46.36.127.217	PTR	mail.majlis.ir
46.36.127.218	PTR	mail.nkhorasan.ir
46.36.127.227	PTR	mail.tvu.ac.ir
46.36.127.239	PTR	mail.eadl.ir
46.36.127.245	A	mta-1.chaapaarkhaaneh.ir