Robtex

Up: 210.245.0.0/20
Can't show all results, try to descend to a more specific CIDR
Down left: 210.245.0.0/22
Down right: 210.245.4.0/22
(Some of the IP numbers are capped at 3 entries)

IP	Type	Hostname
210.245.0.10	A	isp-dns2.fpt.vn
210.245.0.10	A	dns12.fpt.vn
210.245.0.10	A	dns2.fpt.vn
210.245.0.11	A+PTR	dns3.fpt.vn
210.245.0.22	A+PTR	isp-mta7.fpt.vn
210.245.0.25	A	mail.creditrepairtips.online
210.245.0.58	A+PTR	dns5.fpt.vn
210.245.0.68	A	fcs.vn
210.245.0.68	A	fptis.com
210.245.0.130	A+PTR	isp-dhcp.fpt.vn
210.245.0.130	A	phone.fpt.vn
210.245.0.130	A	secure.fpt.vn
210.245.0.131	PTR	isp-dns1.fpt.vn
210.245.0.132	PTR	isp-mta5.fpt.net
210.245.0.136	PTR	han-monintor
210.245.0.139	A+PTR	isp-radius5.fpt.vn
210.245.0.140	A+PTR	isp-radius4.fpt.vn
210.245.0.142	A	isp-webmail.fpt.vn
210.245.0.142	A	isp-mail.fpt.vn
210.245.0.144	A+PTR	isp-radius2.fpt.vn
210.245.0.145	A+PTR	isp-fw.fpt.vn
210.245.0.146	A+PTR	isp-www.fpt.vn
210.245.0.146	A	book.fpt.vn
210.245.0.147	PTR	isp-msrv.fpt.vn
210.245.0.152	PTR	isp-vne2.vnexpress.net
210.245.0.155	A+PTR	isp-inside.fpt.vn
210.245.0.155	A	billing.fpt.vn
210.245.0.158	A	anh.fpt.vn
210.245.0.160	PTR	isp-solohn.fpt.vn
210.245.0.161	A+PTR	isp-fcmail.fpt.net
210.245.0.161	A	isp-mta6.fpt.vn
210.245.0.161	A	isp-fcmail.fpt.net.vn
210.245.0.166	A+PTR	isp-exch1.fpt.vn
210.245.0.167	PTR	isp-exch2.fpt.vn
210.245.0.168	A+PTR	isp-mta4.fpt.vn
210.245.0.168	A	isp-mta4.fpt.net
210.245.0.169	A+PTR	isp-man1.fpt.vn
210.245.0.170	A+PTR	isp-fmb.fpt.vn
210.245.0.172	PTR	isp-mta1.fpt.vn
210.245.0.178	PTR	isp-radius7.fpt.vn
210.245.0.178	A	isp-insidehn.fpt.vn
210.245.0.180	A+PTR	fdns1.fpt.vn
210.245.0.180	A	isp-fdns1.fpt.vn
210.245.0.181	PTR	isp-www1.fpt.vn
210.245.0.181	A	vcbholding.com
210.245.0.187	A+PTR	bulkmail.fpt.net
210.245.0.187	A	dns-vne-sg.fpt.vn
210.245.0.187	A	mta3.fpt.net
210.245.0.202	A	lyncse.fpt.net
210.245.0.220	A	rt.fpt.net
210.245.0.225	A	isp-mail.fpt.vn
210.245.1.65	A+PTR	mailgw01.fpt.com.vn
210.245.1.66	A+PTR	mailgw02.fpt.com.vn
210.245.1.67	PTR	mail.fpt.com.vn
210.245.1.67	A	webmail.fpt.com.vn
210.245.1.67	A	outlook.fpt.com.vn
210.245.1.253	PTR	north-dns01
210.245.1.254	PTR	north-dns02
210.245.2.24	A	mail.office33.gov.vn
210.245.2.145	A	bctcnn.vst.mof.gov.vn
210.245.2.227	A	dns1.dhsphn.edu.vn
210.245.2.227	A	dns1.hnue.edu.vn
210.245.2.228	A	cag.hnue.edu.vn
210.245.2.228	A	dns2.dhsphn.edu.vn
210.245.2.229	PTR	mail.hnue.edu.vn
210.245.2.230	A	cag.hnue.edu.vn
210.245.2.231	A	dialy.hnue.edu.vn
210.245.2.232	A	www.hnue.edu.vn
210.245.2.232	A	www.dhsphn.edu.vn
210.245.2.232	A	dhsphn.edu.vn
210.245.2.238	A	qlgd.hnue.edu.vn
210.245.2.240	A	qlgd.hnue.edu.vn
210.245.2.240	A	hgdvl.hnue.edu.vn
210.245.2.240	A	lunglinh.vn
210.245.2.248	A	www.tinhoccuaem.com
210.245.2.248	A	tinhoccuaem.com
210.245.3.5	A	itrade.wip.abs.vn
210.245.3.9	A	price.wip.abs.vn
210.245.3.35	A+PTR	mail.zamilsteel.com.vn
210.245.3.35	A	mail.zamil.com.vn
210.245.3.35	A	mail.zamil.vn
210.245.3.66	A	lms.topicanative.edu.vn
210.245.3.87	A	mediaposeidon.topica.vn
210.245.3.88	A	ai-static.topicanative.edu.vn
210.245.3.88	A	ai.topicanative.edu.vn
210.245.3.118	A	portal.vaeco.com.vn
210.245.3.133	A	www.dha.com.vn
210.245.3.138	A	mail.noibaicargo.vn
210.245.3.139	A+PTR	mail.noibaicargo.com.vn
210.245.3.140	A	web.noibaicargo.com.vn
210.245.3.140	A	web.noibaicargo.vn
210.245.3.166	A	nissan-asdms.com
210.245.3.167	PTR	smtp.viglaceraland.vn
210.245.3.177	A	mail.qdfish.com
210.245.3.182	PTR	mail.melinhplaza.biz
210.245.3.194	A	share.fts.vtv.vn
210.245.3.203	PTR	mail.thyssenkrupp.com.vn
210.245.4.17	A	niags.com.vn
210.245.4.19	A	nocnba.com
210.245.4.19	A	harevn.com
210.245.4.35	PTR	mail.ncivn.vn
210.245.4.43	A+PTR	mail.shws.com.vn
210.245.4.70	PTR	mail.cavicovn.com
210.245.4.131	PTR	mail.inax.com.vn
210.245.5.99	A	uvsvr01.usol-v.com.vn
210.245.5.101	PTR	mail.vietinbanksc.com.vn
210.245.5.116	A	mail.pvfc.vn
210.245.5.126	A+PTR	smtp.pvfc.com.vn
210.245.5.148	PTR	mail.luvina.net
210.245.5.148	A	*.luvina.net
210.245.5.149	A+PTR	mail.luvina.net
210.245.5.230	A	exchange1.vietcombank.com.vn
210.245.6.6	PTR	mail.ntc.com.vn
210.245.6.66	A+PTR	vn.cdc.gov
210.245.6.77	PTR	vn.cdc.gov
210.245.6.200	PTR	mail.haprogroup.vn
210.245.6.210	A	edge.haprovietnam.vn
210.245.7.1	A	vpn.fpt.com.vn
210.245.7.5	A	adfs.fpt.com.vn
210.245.7.12	A	gadonvietnam.net
210.245.7.12	A	canhkhuyen.com
210.245.7.12	A	www.gadonvietnam.net
210.245.7.18	A+PTR	mail.vatm.vn
210.245.7.20	A	vanphongdientu.vatm.vn
210.245.7.20	A	www.vanphongdientu.vatm.vn
210.245.7.21	A	mail.attech.com.vn
210.245.7.40	A	www.och.vn
210.245.7.40	A	och.vn
210.245.7.41	PTR	mail.htmobile.com.vn
210.245.7.41	A	www.eves.com.vn
210.245.7.41	A	ocs.com.vn
210.245.7.51	A	mail.eves.com.vn
210.245.7.51	A	mail.ocs.com.vn
210.245.7.53	PTR	mail.oceangroup.vn
210.245.7.53	PTR	mail.och.vn
210.245.7.53	A	mail.oceanhospitality.vn
210.245.7.115	PTR	mail.byokane.com.vn
210.245.7.233	A	mail.viviet.vn
210.245.7.245	A	smtp1.toyotavn.com.vn