Robtex

Up: 103.9.0.0/20
Can't show all results, try to descend to a more specific CIDR
Down left: 103.9.0.0/22
Down right: 103.9.4.0/22
(Some of the IP numbers are capped at 3 entries)

IP	Type	Hostname
103.9.0.1	PTR	static.telehouse.com.vn
103.9.0.2	PTR	static.telehouse.com.vn
103.9.0.4	PTR	static.telehouse.com.vn
103.9.0.9	PTR	static.telehouse.com.vn
103.9.0.12	PTR	static.telehouse.com.vn
103.9.0.14	PTR	static.telehouse.com.vn
103.9.0.16	PTR	static.telehouse.com.vn
103.9.0.18	PTR	static.telehouse.com.vn
103.9.0.20	PTR	static.telehouse.com.vn
103.9.0.22	PTR	static.telehouse.com.vn
103.9.0.25	PTR	static.telehouse.com.vn
103.9.0.29	PTR	static.telehouse.com.vn
103.9.0.30	PTR	static.telehouse.com.vn
103.9.0.32	PTR	static.telehouse.com.vn
103.9.0.33	PTR	static.telehouse.com.vn
103.9.0.34	PTR	static.telehouse.com.vn
103.9.0.35	PTR	static.telehouse.com.vn
103.9.0.35	A	mail.vinacominpower.vn
103.9.0.40	PTR	static.telehouse.com.vn
103.9.0.41	PTR	static.telehouse.com.vn
103.9.0.42	PTR	static.telehouse.com.vn
103.9.0.44	PTR	static.telehouse.com.vn
103.9.0.44	A	nfsc.gov.vn
103.9.0.46	A	www.baohiem24g.net
103.9.0.46	A	baohiem24h.net
103.9.0.48	PTR	static.telehouse.com.vn
103.9.0.49	PTR	static.telehouse.com.vn
103.9.0.50	A	www.dienluctkv.vn
103.9.0.50	A	dienluctkv.vn
103.9.0.51	A+PTR	autodiscover.moit.gov.vn
103.9.0.51	A+PTR	mail.moit.gov.vn
103.9.0.58	PTR	static.telehouse.com.vn
103.9.0.58	A	moit.gov.vn
103.9.0.58	A	www.moit.gov.vn
103.9.0.59	A+PTR	mail.idemitsu.com.vn
103.9.0.61	PTR	static.telehouse.com.vn
103.9.0.64	PTR	static.telehouse.com.vn
103.9.0.65	PTR	static.telehouse.com.vn
103.9.0.66	PTR	static.telehouse.com.vn
103.9.0.66	A	fmsad.com
103.9.0.67	PTR	static.telehouse.com.vn
103.9.0.72	A+PTR	mail.idemitsu.com.vn
103.9.0.72	A	idemitsu.com.vn
103.9.0.73	PTR	static.telehouse.com.vn
103.9.0.73	A	tradaythiennhien.com
103.9.0.74	PTR	static.telehouse.com.vn
103.9.0.76	PTR	static.telehouse.com.vn
103.9.0.84	PTR	static.telehouse.com.vn
103.9.0.86	PTR	static.telehouse.com.vn
103.9.0.90	PTR	static.telehouse.com.vn
103.9.0.94	PTR	static.telehouse.com.vn
103.9.0.95	PTR	static.telehouse.com.vn
103.9.0.96	PTR	static.telehouse.com.vn
103.9.0.97	PTR	static.telehouse.com.vn
103.9.0.98	PTR	static.telehouse.com.vn
103.9.0.100	PTR	static.telehouse.com.vn
103.9.0.104	PTR	static.telehouse.com.vn
103.9.0.105	PTR	static.telehouse.com.vn
103.9.0.108	PTR	static.telehouse.com.vn
103.9.0.109	PTR	static.telehouse.com.vn
103.9.0.112	PTR	static.telehouse.com.vn
103.9.0.113	PTR	static.telehouse.com.vn
103.9.0.114	PTR	static.telehouse.com.vn
103.9.0.120	PTR	static.telehouse.com.vn
103.9.0.122	PTR	static.telehouse.com.vn
103.9.0.124	PTR	static.telehouse.com.vn
103.9.0.126	PTR	static.telehouse.com.vn
103.9.0.128	PTR	static.telehouse.com.vn
103.9.0.129	PTR	static.telehouse.com.vn
103.9.0.129	A	insight.fis.vn
103.9.0.130	PTR	static.telehouse.com.vn
103.9.0.130	A	email.telehouse.com.vn
103.9.0.131	PTR	static.telehouse.com.vn
103.9.0.139	PTR	static.telehouse.com.vn
103.9.0.139	A	vinamanpower.com
103.9.0.139	A	mail.bdsvietnam.net
103.9.0.141	PTR	static.telehouse.com.vn
103.9.0.143	PTR	eval01.telehouse.com.vn
103.9.0.144	PTR	static.telehouse.com.vn
103.9.0.147	PTR	static.telehouse.com.vn
103.9.0.147	A	cloudhub.com.vn
103.9.0.147	A	www.mdlz.vn
103.9.0.152	A+PTR	app29.telehouse.com.vn
103.9.0.153	PTR	static.telehouse.com.vn
103.9.0.154	PTR	static.telehouse.com.vn
103.9.0.155	PTR	static.telehouse.com.vn
103.9.0.157	A	etax.fpt.com.vn
103.9.0.160	PTR	static.telehouse.com.vn
103.9.0.161	PTR	ptr-ns.telehouse.com.vn
103.9.0.162	PTR	static.telehouse.com.vn
103.9.0.163	PTR	static.telehouse.com.vn
103.9.0.168	PTR	static.telehouse.com.vn
103.9.0.169	PTR	static.telehouse.com.vn
103.9.0.170	PTR	static.telehouse.com.vn
103.9.0.171	PTR	static.telehouse.com.vn
103.9.0.176	PTR	static.telehouse.com.vn
103.9.0.177	PTR	static.telehouse.com.vn
103.9.0.179	PTR	static.telehouse.com.vn
103.9.0.180	PTR	static.telehouse.com.vn
103.9.0.183	A	cfonavi.com
103.9.0.183	A	huraffi.com
103.9.0.183	A	mail.trnavi.net
103.9.0.184	PTR	static.telehouse.com.vn
103.9.0.185	PTR	static.telehouse.com.vn
103.9.0.188	PTR	static.telehouse.com.vn
103.9.0.196	PTR	static.telehouse.com.vn
103.9.0.197	PTR	static.telehouse.com.vn
103.9.0.198	PTR	static.telehouse.com.vn
103.9.0.203	PTR	static.telehouse.com.vn
103.9.0.205	PTR	static.telehouse.com.vn
103.9.0.208	PTR	static.telehouse.com.vn
103.9.0.212	PTR	static.telehouse.com.vn
103.9.0.212	A	einvoice.fpt.com.vn
103.9.0.212	A	fis.com.vn
103.9.0.215	PTR	static.telehouse.com.vn
103.9.0.222	PTR	static.telehouse.com.vn
103.9.0.222	A	fis.vn
103.9.0.226	PTR	static.telehouse.com.vn
103.9.0.230	PTR	static.telehouse.com.vn
103.9.0.233	PTR	static.telehouse.com.vn
103.9.0.233	A	chocavoi.com
103.9.0.234	PTR	static.telehouse.com.vn
103.9.0.238	PTR	static.telehouse.com.vn
103.9.0.242	PTR	static.telehouse.com.vn
103.9.0.244	PTR	static.telehouse.com.vn
103.9.0.246	PTR	static.telehouse.com.vn
103.9.0.247	PTR	static.telehouse.com.vn
103.9.0.248	PTR	static.telehouse.com.vn
103.9.0.250	PTR	static.telehouse.com.vn
103.9.0.254	PTR	static.telehouse.com.vn
103.9.1.1	PTR	static.telehouse.com.vn
103.9.1.3	PTR	static.telehouse.com.vn
103.9.1.7	PTR	static.telehouse.com.vn
103.9.1.8	PTR	static.telehouse.com.vn
103.9.1.9	PTR	static.telehouse.com.vn
103.9.1.10	PTR	static.telehouse.com.vn
103.9.1.25	PTR	static.telehouse.com.vn
103.9.1.32	PTR	static.telehouse.com.vn
103.9.1.38	PTR	static.telehouse.com.vn
103.9.1.65	PTR	static.telehouse.com.vn
103.9.1.84	PTR	static.telehouse.com.vn
103.9.1.86	PTR	static.telehouse.com.vn
103.9.1.120	PTR	static.telehouse.com.vn
103.9.1.128	PTR	static.telehouse.com.vn
103.9.1.160	PTR	static.telehouse.com.vn
103.9.1.161	PTR	static.telehouse.com.vn
103.9.1.164	PTR	static.telehouse.com.vn
103.9.1.168	PTR	static.telehouse.com.vn
103.9.1.176	PTR	static.telehouse.com.vn
103.9.3.1	PTR	static.telehouse.com.vn
103.9.3.128	PTR	static.telehouse.com.vn
103.9.4.23	A+PTR	webmail.banknetvn.vn
103.9.4.23	A	mail.banknetvn.vn
103.9.5.9	PTR	mail.banknetvn.com.vn
103.9.5.10	A	banknetvn.com.vn
103.9.5.10	A	banknetvn.vn
103.9.5.20	A+PTR	mail.banknetvn.com.vn
103.9.5.20	A	webmail.banknetvn.com.vn