Robtex

Up: 91.98.0.0/18
Can't show all results, try to descend to a more specific CIDR
Down left: 91.98.0.0/20
Down right: 91.98.16.0/20
(Some of the IP numbers are capped at 3 entries)

IP	Type	Hostname
91.98.0.0	PTR	91.98.0.0.pol.ir
91.98.1.1	PTR	91.98.1.1.pol.ir
91.98.1.2	PTR	91.98.1.2.pol.ir
91.98.1.129	PTR	91.98.1.129.pol.ir
91.98.1.130	PTR	91.98.1.130.pol.ir
91.98.1.195	PTR	91.98.1.195.pol.ir
91.98.1.227	PTR	91.98.1.227.pol.ir
91.98.2.2	PTR	91.98.2.2.pol.ir
91.98.2.35	PTR	91.98.2.35.pol.ir
91.98.5.162	PTR	91.98.5.162.pol.ir
91.98.6.2	PTR	91.98.6.2.pol.ir
91.98.6.65	PTR	91.98.6.65.pol.ir
91.98.8.0	PTR	91.98.8.0.pol.ir
91.98.9.2	PTR	91.98.9.2.pol.ir
91.98.11.2	PTR	91.98.11.2.pol.ir
91.98.14.2	PTR	91.98.14.2.pol.ir
91.98.16.0	PTR	91.98.16.0.pol.ir
91.98.20.38	A	onlinedemo.dynu.net
91.98.20.75	A	exch.hamyar-niroo.com
91.98.21.64	A	mail.zomorod-parseh.ir
91.98.22.163	PTR	91.98.22.163.pol.ir
91.98.24.0	PTR	91.98.24.0.pol.ir
91.98.28.0	PTR	91.98.28.0.pol.ir
91.98.28.34	PTR	booking.homares.ir
91.98.28.42	A	ns1.mirnezhad.ir
91.98.28.42	A	ns2.update-eset.ir
91.98.28.50	A	ns2.shahreman.ir
91.98.28.50	A	shahreman.ir
91.98.28.66	PTR	91.98.28.66.pol.ir
91.98.28.66	A	medikoapp.com
91.98.28.66	A	web-center.ir
91.98.28.97	PTR	91.98.28.97.pol.ir
91.98.28.97	A	digiforum.ir
91.98.28.97	A	digitalkala.ir
91.98.28.98	PTR	91.98.28.98.pol.ir
91.98.28.98	A	www.digitalkala.ir
91.98.28.98	A	mx0.brandgeist.de
91.98.28.138	A	www.e1009.ir
91.98.28.138	A	e1009.ir
91.98.28.146	A	www.uhlsportfootball.com
91.98.28.150	A	parsisys.ir
91.98.28.162	PTR	91.98.28.162.pol.ir
91.98.28.164	A	mail.jz.ac.ir
91.98.28.171	A	mail.jz-dns.com
91.98.28.171	A	ns1.jz.ac.ir
91.98.28.171	A	ns1.jz-dns.com
91.98.28.215	A	kalaoma.com
91.98.28.226	PTR	91.98.28.226.pol.ir
91.98.28.226	A	mail.4taraf.ir
91.98.28.226	A	4taraf.ir
91.98.29.1	PTR	91.98.29.1.pol.ir
91.98.29.2	PTR	ns1.fspdns.com
91.98.29.2	A	ns100.fspdns.com
91.98.29.10	A	ns.baplus.ir
91.98.29.10	A	www.tatbank.ir
91.98.29.10	A	tatleasing.ir
91.98.29.54	A	r-azmoon.ir
91.98.29.66	PTR	91.98.29.66.pol.ir
91.98.29.67	PTR	91.98.29.67.pol.ir
91.98.29.67	A	ns1.mehrreza.net
91.98.29.68	A	alyandostlar.com
91.98.29.68	A	ns0.goodsamaritanlife.com
91.98.29.68	A	buyonline247.com.au
91.98.29.98	PTR	91.98.29.98.pol.ir
91.98.29.98	A	icobige.ir
91.98.29.102	A	tafakkor.refah-bank.ir
91.98.29.106	A	afragps.ir
91.98.29.106	A	gpssaafta.ir
91.98.29.130	PTR	91.98.29.130.pol.ir
91.98.29.134	A	kartoon.ir
91.98.29.134	A	3001.ir
91.98.29.134	A	mail.softbank20.ir
91.98.29.170	A	mail.khoonat.com
91.98.29.170	A	mail.narenjak.com
91.98.29.170	A	ns1.jj-ns.com
91.98.29.194	A+PTR	yello.ir
91.98.29.194	A	hormozganprisons.ir
91.98.29.194	A	mail.markaziprisons.ir
91.98.29.230	A	mail.lotustablet.ir
91.98.29.230	A	ns.lotustablet.com
91.98.29.230	A	lotuslaptop.ir
91.98.30.2	A+PTR	irpars01dns.datamizban.net
91.98.30.2	A	ns1.datamizban.net
91.98.30.6	A	honar.ac.ir
91.98.30.10	A	poldownload.com
91.98.30.38	A	mail2.say-co.com
91.98.30.38	A	ns1.ecobox2011.com
91.98.30.38	A	nullmx.rasmussenlearntoday.com
91.98.30.54	A	mail.lotustablet.ir
91.98.30.70	A	geiles-musical.ch
91.98.30.70	A	ns2.treep.ir
91.98.30.70	A	atesliguzel.com
91.98.30.98	A	ngs.co.ir
91.98.30.114	A	mail.431.ir
91.98.30.114	A	mail.mypost24.com
91.98.30.114	A	mail.nini123.ir
91.98.30.131	A	www.iauworkshop.ir
91.98.30.131	A	iauworkshop.ir
91.98.30.132	A	www.spicycode.ir
91.98.30.132	A	www.cssspice.ir
91.98.30.163	PTR	91.98.30.163.pol.ir
91.98.30.163	A	arzeshafarinan.com
91.98.30.163	A	ns.parkookshaldeh.com
91.98.30.219	A	nfex2.parsonline.net
91.98.30.220	A	nfex3.parsonline.net
91.98.30.222	A	00098sms.com
91.98.30.222	A	mysmsjob.com
91.98.30.226	A	irandokmeh.com
91.98.30.226	A	mail.irandokmeh.net
91.98.30.226	A	mail.irandokmeh.com
91.98.30.234	A	pardismonitoring.com
91.98.31.10	A	user.parsonline.com
91.98.31.11	A	user.parsonline.com
91.98.31.18	A	albasco.com
91.98.31.18	A	mail.albasko.ir
91.98.31.18	A	mail.albasco.ir
91.98.31.50	A	raheandishe.ir
91.98.31.50	A	alirezaarabshahi.com
91.98.31.54	A	ns2.inajafi.ir
91.98.31.54	A	mail.kanoone-alie-bazneshastegan.ir
91.98.31.75	A	barsara-elam.net
91.98.31.75	A	barsara-app.net
91.98.31.86	A	myparsonline.com
91.98.31.90	A	*.womenhc.net
91.98.31.130	PTR	91.98.31.130.pol.ir
91.98.31.130	A	parsavaz.com
91.98.31.130	A	mic.co.ir
91.98.31.132	A	bimehmoallem.co.ir
91.98.31.132	A	bimehmoallem.ir
91.98.31.162	PTR	mail.iranpl.ir
91.98.31.164	A	irlms.ir
91.98.31.164	A	mail.ngs.ir
91.98.31.170	A	ns1.4suq.net
91.98.31.170	A	ns.dorrinsport.com
91.98.31.198	A	mail.kowsarnet.ir
91.98.31.203	A	ns1.tednap.ir
91.98.31.203	A	ns.tednap.ir
91.98.31.203	A	ns3.tednap.ir
91.98.31.227	A+PTR	mail.rcs.ir
91.98.31.228	A	en.rcs.ir
91.98.31.228	A	www.rcs.ir
91.98.31.242	A	ns3.tsesc.com