Robtex

Up: 14.0.20.0/23
Can't show all results, try to descend to a more specific CIDR
Down left: 14.0.20.0/25
Down right: 14.0.20.128/25
(Some of the IP numbers are capped at 3 entries)

IP	Type	Hostname
14.0.20.1	PTR	dcenter.cuocsongmoi.vn
14.0.20.2	PTR	2.20.0.14.in-addr.arpa.cuocsongmoi.vn
14.0.20.2	A	ambient.com.vn
14.0.20.2	A	serving-system.com
14.0.20.3	PTR	3.20.0.14.in-addr.arpa.cuocsongmoi.vn
14.0.20.3	A	rta.adnetwork.vn
14.0.20.4	PTR	dcenter.cuocsongmoi.vn
14.0.20.4	A	metrics.adnetwork.vn
14.0.20.5	PTR	dcenter.cuocsongmoi.vn
14.0.20.5	A	imp.adnetwork.vn
14.0.20.6	PTR	dcenter.cuocsongmoi.vn
14.0.20.6	A	conv.adnetwork.vn
14.0.20.7	PTR	dcenter.cuocsongmoi.vn
14.0.20.7	A	track.adnetwork.vn
14.0.20.9	PTR	dc20.cuocsongmoi.vn
14.0.20.11	PTR	dcenter.cuocsongmoi.vn
14.0.20.15	PTR	15.20.0.14.in-addr.arpa.cuocsongmoi.vn
14.0.20.15	A	sbsasia.net
14.0.20.17	PTR	17.20.0.14.in-addr.arpa.cuocsongmoi.vn
14.0.20.17	A	media.m.ambientplatform.vn
14.0.20.21	PTR	dcenter.cuocsongmoi.vn
14.0.20.21	A	imp.m.ambientplatform.vn
14.0.20.22	PTR	dcenter.cuocsongmoi.vn
14.0.20.22	A	delivery.m.ambientplatform.vn
14.0.20.23	PTR	dcenter.cuocsongmoi.vn
14.0.20.23	A	click.m.ambientplatform.vn
14.0.20.25	A	retg.adnetwork.vn
14.0.20.28	PTR	dcenter.cuocsongmoi.vn
14.0.20.28	A	client-pages.adnetwork.vn
14.0.20.28	A	media-ext.adnetwork.vn
14.0.20.31	PTR	dcenter.cuocsongmoi.vn
14.0.20.35	PTR	dcenter.cuocsongmoi.vn
14.0.20.35	A	4r.vn-rp.org
14.0.20.40	PTR	dulichtinhthan.com
14.0.20.40	A	trabaoduy.com
14.0.20.40	A	becakoinhat.com
14.0.20.41	PTR	dc20.cuocsongmoi.vn
14.0.20.41	A	maythoikhi.co
14.0.20.41	A	mail.maxlightpro.com
14.0.20.42	A	xaydungvuan.com
14.0.20.43	PTR	dcenter.cuocsongmoi.vn
14.0.20.43	A	mail.lvrp.net
14.0.20.44	A+PTR	mx3.fordvn.vn
14.0.20.44	A	mail.ns2.vn
14.0.20.44	A	tanloigroup.com
14.0.20.46	PTR	mx5.fordvn.vn
14.0.20.46	A	hanajonghapvina.com
14.0.20.46	A	www.theme4u.biz
14.0.20.48	PTR	dcenter.cuocsongmoi.vn
14.0.20.48	A	dc-8dbb40f9f935.netsa.com.vn
14.0.20.53	A	tranhdongtuankiet.com
14.0.20.55	A+PTR	mail.vpsgiare.info
14.0.20.55	A	vpsgiare.info
14.0.20.55	A	netsa.vn
14.0.20.59	A+PTR	mail.netsa.vn
14.0.20.59	A	wix-gaming.net
14.0.20.59	A	dc-fa026bb16a8e.netsa.vn
14.0.20.70	PTR	dc20.cuocsongmoi.vn
14.0.20.76	PTR	dc20.cuocsongmoi.vn
14.0.20.77	PTR	dc20.cuocsongmoi.vn
14.0.20.78	PTR	78.20.0.14.in-addr.arpa.cuocsongmoi.vn
14.0.20.83	A	mail.tcivn.com
14.0.20.93	PTR	dcenter.cuocsongmoi.vn
14.0.20.100	A	mail.ketoandongduong.com
14.0.20.104	A	mail.gt.com.vn
14.0.20.107	PTR	dc20.cuocsongmoi.vn
14.0.20.107	A	ci.com.vn
14.0.20.107	A	chuyenongduong.com
14.0.20.111	PTR	dcenter.cuocsongmoi.vn
14.0.20.119	PTR	dc20.cuocsongmoi.vn
14.0.20.119	A	www.ambientdigital.com.vn
14.0.20.119	A	ambientdigital.com.vn
14.0.20.135	PTR	dcenter.cuocsongmoi.vn
14.0.20.141	A+PTR	mail.digiwall.vn
14.0.20.141	A	mail.hoanglamco.com
14.0.20.141	A	mail.saigonservice.vn
14.0.20.148	PTR	adkvn.com
14.0.20.148	PTR	asiaflames.com
14.0.20.148	PTR	digiflames.com
14.0.20.151	PTR	dc20.cuocsongmoi.vn
14.0.20.153	A	khaihoanland.com.vn
14.0.20.155	A	mail.jaspas.com.vn
14.0.20.156	PTR	sv20156.mythuat.vn
14.0.20.156	A	*.cuuhocsinhtanhong.com
14.0.20.156	A	thungcarton3a4h.com
14.0.20.157	PTR	dc20.cuocsongmoi.vn
14.0.20.157	A	hi-phone.com.vn
14.0.20.157	A	webmail.choigame24h.net
14.0.20.162	PTR	dcenter.cuocsongmoi.vn
14.0.20.171	PTR	dcenter.cuocsongmoi.vn
14.0.20.172	PTR	dc20.cuocsongmoi.vn
14.0.20.185	PTR	dcenter.cuocsongmoi.vn
14.0.20.185	A	mail.vuisong.org
14.0.20.185	A	mail.icore.net.vn
14.0.20.192	PTR	dcenter.cuocsongmoi.vn
14.0.20.195	PTR	mail.gtsc.vn
14.0.20.195	A	bivbo.com
14.0.20.195	A	mail.bivbo.com
14.0.20.199	PTR	dcenter.cuocsongmoi.vn
14.0.20.203	PTR	dcenter.cuocsongmoi.vn
14.0.20.204	PTR	dc20.cuocsongmoi.vn
14.0.20.206	PTR	dcenter.cuocsongmoi.vn
14.0.20.227	PTR	dcenter.cuocsongmoi.vn
14.0.20.227	A	mail.inbisco.com.vn
14.0.20.228	PTR	mail.iec-vn.com
14.0.20.233	PTR	dcenter.cuocsongmoi.vn
14.0.20.233	A	betacafe.vn
14.0.20.234	PTR	dcenter.cuocsongmoi.vn
14.0.20.237	PTR	dcenter.cuocsongmoi.vn
14.0.20.240	PTR	thuongmai.azhost.vn
14.0.20.240	PTR	240.mta.mixdual.com