Robtex

Up: 5.28.32.0/20
Can't show all results, try to descend to a more specific CIDR
Down left: 5.28.32.0/22
Down right: 5.28.36.0/22
(Some of the IP numbers are capped at 3 entries)

IP	Type	Hostname
5.28.32.187	PTR	068b69.suburgssethe.com
5.28.32.187	A	fuseznetcymetru.com
5.28.33.3	A+PTR	ns1.baharan.ir
5.28.33.3	PTR	ns1.raviyan.ir
5.28.33.3	A+PTR	ns1.selseleh.ir
5.28.33.4	PTR	ns2.raviyan.ir
5.28.33.4	PTR	ns2.selseleh.ir
5.28.33.4	PTR	ns2.selselehkhooban.ir
5.28.33.5	A+PTR	mail.sadeghan.ir
5.28.33.8	A	mail.mng-co.com
5.28.33.8	A	mail.sadeghan.ir
5.28.33.8	A	mail.mng-co.net
5.28.33.10	A+PTR	mail.sahandmoshaver.ir
5.28.33.11	PTR	mail.defamoghaddas.ir
5.28.34.2	A	lrsc.ir
5.28.34.4	A	baharan.ir
5.28.34.66	A	sadeghan.ir
5.28.34.69	A	sephealthsystem.ir
5.28.34.71	A	mng-co.com
5.28.34.71	A	mail.thepitchbook.com
5.28.34.72	A	hdrdc.ir
5.28.34.72	A	hdrdc.org
5.28.34.72	A	defamoghaddas.net
5.28.34.80	A	mhfava.com
5.28.34.80	A	mhfava.org
5.28.34.81	A	shohadafava.ir
5.28.34.83	A	bakhshesh.org
5.28.34.87	A	mng-co.com
5.28.34.96	A	pishraftcenter.com
5.28.34.117	PTR	45b47.conderammits.com
5.28.34.117	A	celerksontracolutar.com
5.28.36.158	PTR	b4540.formendqs.com
5.28.36.158	A	duelscasettlenzic.com
5.28.38.183	PTR	c3b3d6c.systsersy.com
5.28.38.183	A	hacekomaticesmo.com
5.28.39.12	A	dns2.beetelbox.com