Robtex

Up: 91.98.248.0/21
Can't show all results, try to descend to a more specific CIDR
Down left: 91.98.248.0/23
Down right: 91.98.250.0/23
(Some of the IP numbers are capped at 3 entries)

IP	Type	Hostname
91.98.248.14	PTR	91.98.248.14.pol.ir
91.98.248.14	A	mail.manoketab.com
91.98.248.16	PTR	91.98.248.16.pol.ir
91.98.248.16	A	nikanbank.com
91.98.248.16	A	www.nikanbank.com
91.98.248.108	PTR	91.98.248.108.pol.ir
91.98.248.108	A	seirangasht.com
91.98.248.114	A	mx.sinamcb.com
91.98.248.134	PTR	mail.mftvanak.com
91.98.248.168	PTR	91.98.248.168.pol.ir
91.98.248.168	A	cvlsoft.com
91.98.248.168	A	mail.cvlsoft.com
91.98.248.169	PTR	91.98.248.169.pol.ir
91.98.248.180	PTR	mail.aliasys.co
91.98.248.181	PTR	91.98.248.181.pol.ir
91.98.248.181	A	mail.aliasys.co
91.98.248.201	PTR	91.98.248.201.pol.ir
91.98.248.213	PTR	91.98.248.213.pol.ir
91.98.248.252	PTR	91.98.248.252.pol.ir
91.98.248.252	A	mail.seawaves-shipping.net
91.98.248.252	A	seawaves.net
91.98.249.6	PTR	91.98.249.6.pol.ir
91.98.249.39	A+PTR	mail.absun.ir
91.98.249.39	A	mail.absun-palayesh.com
91.98.249.39	A	mail.absunpalayesh.com
91.98.249.46	PTR	91.98.249.46.pol.ir
91.98.249.62	PTR	91.98.249.62.pol.ir
91.98.249.64	PTR	91.98.249.64.pol.ir
91.98.249.66	PTR	91.98.249.66.pol.ir
91.98.249.76	A	ns1.barid-opex.ir
91.98.249.80	PTR	91.98.249.80.pol.ir
91.98.249.106	A	prooficar.com
91.98.249.179	PTR	91.98.249.179.pol.ir
91.98.249.182	PTR	91.98.249.182.pol.ir
91.98.249.182	A	mail.rhytonjewelry.com
91.98.249.189	PTR	91.98.249.189.pol.ir
91.98.249.202	PTR	91.98.249.202.pol.ir
91.98.249.238	PTR	mail.padra.net
91.98.249.247	A	nikdel.tk
91.98.249.247	A	mail.nikdel.tk
91.98.249.252	PTR	91.98.249.252.pol.ir
91.98.249.252	A	avihang.ir
91.98.249.252	A	mail.avihang.com
91.98.250.19	PTR	91.98.250.19.pol.ir
91.98.250.74	PTR	91.98.250.74.pol.ir
91.98.250.103	PTR	91.98.250.103.pol.ir
91.98.250.123	PTR	91.98.250.123.pol.ir
91.98.250.130	PTR	91.98.250.130.pol.ir
91.98.250.130	A	ns1.porsetareh.ir
91.98.250.130	A	ns2.porsetareh.ir
91.98.250.197	A	mail.cotint.ir
91.98.250.210	PTR	91.98.250.210.pol.ir
91.98.250.224	PTR	91.98.250.224.pol.ir
91.98.250.224	A	samshops.com
91.98.250.249	PTR	91.98.250.249.pol.ir
91.98.251.4	A+PTR	mail.inpex.co.ir
91.98.251.12	A	mail.bonyandandan.com
91.98.251.18	PTR	91.98.251.18.pol.ir
91.98.251.57	PTR	91.98.251.57.pol.ir
91.98.251.57	A	mail.fermaxiran.com
91.98.251.82	PTR	91.98.251.82.pol.ir
91.98.251.132	PTR	91.98.251.132.pol.ir
91.98.251.132	A	webserver.aryansystem.net
91.98.251.132	A	p.aryansystem.net
91.98.251.150	A	mail.manousha.ir
91.98.251.150	A	mail.manousha.com
91.98.251.172	PTR	91.98.251.172.pol.ir
91.98.251.172	A	mail.jangal.com
91.98.251.250	PTR	91.98.251.250.pol.ir
91.98.251.255	PTR	91.98.251.255.pol.ir