Robtex

Up: 203.162.4.0/23
Can't show all results, try to descend to a more specific CIDR
Down left: 203.162.4.0/25
Down right: 203.162.4.128/25
(Some of the IP numbers are capped at 3 entries)

IP	Type	Hostname
203.162.4.1	A+PTR	hcm-server1.vnn.vn
203.162.4.1	A	api.com.vn
203.162.4.2	A+PTR	hcm-server2.vnn.vn
203.162.4.5	A+PTR	hcm-server05.vnn.vn
203.162.4.7	A+PTR	ms21.vnn.vn
203.162.4.8	A+PTR	mu21.vnn.vn
203.162.4.9	A+PTR	mu22.vnn.vn
203.162.4.10	A+PTR	ms22.vnn.vn
203.162.4.11	A+PTR	hcm-ld1.vnn.vn
203.162.4.11	A	gw.s.vnn.vn
203.162.4.15	PTR	hcm-15.vnn.vn
203.162.4.20	A	hcm-sbr-prepaid.vnn.vn
203.162.4.21	PTR	hcm-mail-prepaid.vnn.vn
203.162.4.23	A+PTR	hcm-ldap-prepaid.vnn.vn
203.162.4.24	A+PTR	hcm-dbms-prepaid.vnn.vn
203.162.4.26	PTR	static.vnpt.vn
203.162.4.26	A	prepaid1.vnn.vn
203.162.4.26	A	prepaid.vnn.vn
203.162.4.31	A+PTR	hcm-31.vnn.vn
203.162.4.32	PTR	hcm-32.vnn.vn
203.162.4.32	PTR	ms32.vnn.vn
203.162.4.34	A+PTR	hcm-34.vnn.vn
203.162.4.35	A+PTR	hcm-35.vnn.vn
203.162.4.36	PTR	hcm-36.vnn.vn
203.162.4.36	A+PTR	mu24.vnn.vn
203.162.4.37	A+PTR	mu23.vnn.vn
203.162.4.41	PTR	vaschcm.vnn.vn
203.162.4.47	PTR	fmail.vnn.vn
203.162.4.93	PTR	hcm-93.vnn.vn
203.162.4.94	A+PTR	hcm-94.vnn.vn
203.162.4.94	A+PTR	hcm-ldm1.vnn.vn
203.162.4.96	A	hcm-96.vnn.vn
203.162.4.97	PTR	hcm-97.vnn.vn
203.162.4.98	PTR	hcm-98.vnn.vn
203.162.4.99	A+PTR	hcm-99.vnn.vn
203.162.4.112	A	hcm-112.vnn.vn
203.162.4.116	A+PTR	hcm-116.vnn.vn
203.162.4.117	PTR	hcm-117.vnn.vn
203.162.4.118	A+PTR	hcm-118.vnn.vn
203.162.4.120	PTR	hcm-120.vnn.vn
203.162.4.121	PTR	hcm-121.vnn.vn
203.162.4.138	A+PTR	premium.smd.vnn.vn
203.162.4.138	A+PTR	www.premium.smd.vnn.vn
203.162.4.138	A+PTR	premium.smtp.smd.vnn.vn
203.162.4.139	A+PTR	smtp.smd.vnn.vn
203.162.4.144	A+PTR	ms24.vnn.vn
203.162.4.145	A+PTR	sp.smd.vnn.vn
203.162.4.146	A+PTR	smtp.mr.vnn.vn
203.162.4.146	A	mr.lephan.com.vn
203.162.4.147	A+PTR	sp.mr.vnn.vn
203.162.4.148	A+PTR	mr.vnn.vn
203.162.4.148	A	greenvina.com
203.162.4.148	A	m-offline.vnn.vn
203.162.4.149	PTR	smd.vnn.vn
203.162.4.149	PTR	ms.smd.vnn.vn
203.162.4.149	PTR	pop.smd.vnn.vn
203.162.4.150	A+PTR	vdc2.com.vn
203.162.4.150	A	mail.vdc2.com.vn
203.162.4.150	A	mailvdc2.vnn.vn
203.162.4.151	PTR	business.vnn.vn
203.162.4.151	A+PTR	smd2.vnn.vn
203.162.4.151	A+PTR	mail.smd2.vnn.vn
203.162.4.155	A+PTR	ms32.vnn.vn
203.162.4.157	A	ms23.vnn.vn
203.162.4.161	A+PTR	hcm-ldap.s.vnn.vn
203.162.4.162	A+PTR	hcm-ms1.s.vnn.vn
203.162.4.163	A+PTR	hcm-mx1.s.vnn.vn
203.162.4.165	A+PTR	hcm-db.s.vnn.vn
203.162.4.166	A+PTR	hcm-us1.s.vnn.vn
203.162.4.166	A	s.vnn.vn
203.162.4.167	A+PTR	hcm-167.vnn.vn
203.162.4.168	A+PTR	hcm-168.vnn.vn
203.162.4.168	PTR	premiumimap.smd.vnn.vn
203.162.4.168	A+PTR	premiummail.smd.vnn.vn
203.162.4.169	A+PTR	hcm-169.vnn.vn
203.162.4.170	A+PTR	hcm-170.vnn.vn
203.162.4.171	A+PTR	hcm-server171.vnn.vn
203.162.4.180	PTR	hcm-180.vnn.vn
203.162.4.180	A	hcm-proxy01.vnn.vn
203.162.4.181	A+PTR	hcm-proxy02.vnn.vn
203.162.4.182	A	hcm-proxycw01.vnn.vn
203.162.4.183	A	hcm-proxycw02.vnn.vn
203.162.4.184	A+PTR	hcm-ms-184.vnn.vn
203.162.4.185	A+PTR	hcm-ms-185.vnn.vn
203.162.4.186	A+PTR	hcm-ms-186.vnn.vn
203.162.4.187	A+PTR	hcm-ms-187.vnn.vn
203.162.4.188	A+PTR	hcm-ms-188.vnn.vn
203.162.4.189	A+PTR	hcm-ms-189.vnn.vn
203.162.4.190	A+PTR	hcm-server01.vnn.vn
203.162.4.190	A	vanepbiendong.com
203.162.4.190	A	cyberlinkvn.com
203.162.4.191	A+PTR	hcm-server02.vnn.vn
203.162.4.191	A	dns2.vienthongbentre.vn
203.162.4.191	A	gvnvh18.cf
203.162.4.193	PTR	hcm-193.vnn.vn
203.162.4.195	A+PTR	hcm-195.vnn.vn
203.162.4.196	A+PTR	hcm-196.vnn.vn
203.162.4.197	A+PTR	hcm-197.vnn.vn
203.162.4.198	A	hcm-198.vnn.vn
203.162.4.199	A+PTR	hcm-199.vnn.vn
203.162.4.200	A+PTR	hcm-200.vnn.vn
203.162.4.201	A	hcm-201.vnn.vn
203.162.4.203	A	mrtgktm.vnn.vn
203.162.4.203	A	mrtg-ktm.vnn.vn
203.162.4.221	A+PTR	hcm-221.vnn.vn
203.162.4.222	A	hcm-222.vnn.vn
203.162.4.223	A+PTR	hcm-223.vnn.vn
203.162.4.224	A	hcm-224.vnn.vn
203.162.4.225	A	hcm-225.vnn.vn
203.162.4.226	PTR	hcm-226.vnn.vn
203.162.4.227	A	hcm-227.vnn.vn
203.162.4.231	A+PTR	hcm-231.vnn.vn
203.162.4.232	PTR	hcm-232.vnn.vn
203.162.4.233	A+PTR	hcm-233.vnn.vn
203.162.4.234	A+PTR	hcm-234.vnn.vn
203.162.4.235	A+PTR	hcm-235.vnn.vn