Robtex

Up: 222.255.224.0/19
Can't show all results, try to descend to a more specific CIDR
Down left: 222.255.240.0/21
Down right: 222.255.248.0/21
(Some of the IP numbers are capped at 3 entries)

IP	Type	Hostname
222.255.241.129	PTR	dynamic.vdc.vn
222.255.241.144	PTR	dynamic.vdc.vn
222.255.241.193	PTR	dynamic.vdc.vn
222.255.241.194	PTR	dynamic.vdc.vn
222.255.241.226	PTR	dynamic.vdc.vn
222.255.241.243	PTR	dynamic.vdc.vn
222.255.247.195	PTR	dynamic.vdc.vn
222.255.248.1	PTR	static.vdc.vn
222.255.248.2	PTR	static.vdc.vn
222.255.248.3	PTR	static.vdc.vn
222.255.248.16	PTR	static.vdc.vn
222.255.248.17	PTR	static.vdc.vn
222.255.248.18	PTR	static.vdc.vn
222.255.248.19	PTR	static.vdc.vn
222.255.248.32	PTR	static.vdc.vn
222.255.248.33	PTR	static.vdc.vn
222.255.248.34	PTR	static.vdc.vn
222.255.248.48	PTR	static.vdc.vn
222.255.248.49	PTR	static.vdc.vn
222.255.248.50	PTR	static.vdc.vn
222.255.248.51	PTR	static.vdc.vn
222.255.248.64	PTR	static.vdc.vn
222.255.248.65	PTR	static.vdc.vn
222.255.248.66	PTR	static.vdc.vn
222.255.248.67	PTR	static.vdc.vn
222.255.248.81	PTR	static.vdc.vn
222.255.248.83	PTR	static.vdc.vn
222.255.248.96	PTR	static.vdc.vn
222.255.248.97	PTR	static.vdc.vn
222.255.248.99	PTR	static.vdc.vn
222.255.248.112	PTR	static.vdc.vn
222.255.248.113	PTR	static.vdc.vn
222.255.248.114	PTR	static.vnpt.vn
222.255.248.114	A	arfm.gov.vn
222.255.248.114	A	ipu132vietnam.vn
222.255.248.115	PTR	static.vdc.vn
222.255.248.128	PTR	static.vdc.vn
222.255.248.129	PTR	static.vdc.vn
222.255.248.130	PTR	static.vdc.vn
222.255.248.131	PTR	static.vdc.vn
222.255.248.135	A	ns1.bsc.com.vn
222.255.248.145	PTR	static.vdc.vn
222.255.248.147	PTR	static.vnpt.vn
222.255.248.147	A	hostmaster.viettin.vn
222.255.248.147	A	viettin.com.vn
222.255.248.160	PTR	static.vdc.vn
222.255.248.161	PTR	static.vdc.vn
222.255.248.162	PTR	static.vdc.vn
222.255.248.163	PTR	static.vdc.vn
222.255.248.176	PTR	static.vdc.vn
222.255.248.177	PTR	static.vdc.vn
222.255.248.178	PTR	static.vdc.vn
222.255.248.179	PTR	static.vdc.vn
222.255.248.192	PTR	static.vdc.vn
222.255.248.193	PTR	static.vdc.vn
222.255.248.194	PTR	static.vnpt.vn
222.255.248.195	PTR	static.vdc.vn
222.255.248.209	PTR	static.vdc.vn
222.255.248.210	PTR	static.vdc.vn
222.255.248.211	PTR	static.vdc.vn
222.255.248.224	PTR	static.vdc.vn
222.255.248.225	PTR	static.vdc.vn
222.255.248.227	PTR	static.vdc.vn
222.255.248.241	PTR	static.vdc.vn
222.255.248.242	PTR	static.vdc.vn
222.255.249.1	PTR	static.vdc.vn
222.255.249.2	PTR	static.vdc.vn
222.255.249.16	PTR	static.vdc.vn
222.255.249.17	PTR	static.vdc.vn
222.255.249.18	PTR	static.vdc.vn
222.255.249.19	PTR	static.vdc.vn
222.255.249.33	PTR	dns1.tvsi.com.vn
222.255.249.34	PTR	dns2.tvsi.com.vn
222.255.249.35	PTR	hostc4.tvsi.com.vn
222.255.249.36	PTR	mail1.tvsi.com.vn
222.255.249.48	PTR	static.vdc.vn
222.255.249.50	PTR	static.vdc.vn
222.255.249.66	PTR	static.vdc.vn
222.255.249.67	PTR	static.vdc.vn
222.255.249.80	PTR	static.vdc.vn
222.255.249.82	PTR	static.vdc.vn
222.255.249.83	PTR	static.vdc.vn
222.255.249.96	PTR	static.vdc.vn
222.255.249.97	PTR	static.vdc.vn
222.255.249.99	PTR	static.vdc.vn
222.255.249.113	PTR	static.vdc.vn
222.255.249.114	PTR	static.vdc.vn
222.255.249.115	PTR	static.vdc.vn
222.255.249.128	PTR	static.vdc.vn
222.255.249.130	PTR	static.vdc.vn
222.255.249.131	PTR	static.vdc.vn
222.255.249.145	PTR	static.vdc.vn
222.255.249.160	PTR	static.vdc.vn
222.255.249.161	PTR	static.vdc.vn
222.255.249.162	PTR	static.vdc.vn
222.255.249.163	PTR	static.vdc.vn
222.255.249.176	PTR	static.vdc.vn
222.255.249.177	PTR	static.vdc.vn
222.255.249.178	PTR	static.vdc.vn
222.255.249.192	PTR	static.vdc.vn
222.255.249.195	PTR	static.vdc.vn
222.255.249.208	PTR	static.vdc.vn
222.255.249.209	PTR	static.vdc.vn
222.255.249.210	PTR	static.vdc.vn
222.255.249.211	PTR	static.vdc.vn
222.255.249.224	PTR	static.vdc.vn
222.255.249.225	PTR	static.vdc.vn
222.255.249.226	PTR	static.vdc.vn
222.255.249.240	PTR	static.vdc.vn
222.255.249.241	PTR	static.vdc.vn
222.255.249.243	PTR	static.vdc.vn
222.255.250.0	PTR	static.vdc.vn
222.255.250.1	PTR	static.vdc.vn
222.255.250.2	PTR	static.vdc.vn
222.255.250.3	PTR	static.vdc.vn
222.255.250.16	PTR	static.vdc.vn
222.255.250.17	PTR	static.vdc.vn
222.255.250.18	PTR	static.vdc.vn
222.255.250.19	PTR	static.vdc.vn
222.255.250.32	PTR	static.vnpt.vn
222.255.250.33	PTR	static.vdc.vn
222.255.250.34	PTR	static.vdc.vn
222.255.250.48	PTR	static.vdc.vn
222.255.250.49	PTR	static.vdc.vn
222.255.250.51	PTR	static.vdc.vn
222.255.250.64	PTR	static.vdc.vn
222.255.250.65	PTR	static.vdc.vn
222.255.250.66	PTR	static.vnpt.vn
222.255.250.80	PTR	static.vdc.vn
222.255.250.81	PTR	vdcsmtp.vidamco.com.vn
222.255.250.81	A	mail.vidamco.com.vn
222.255.250.98	PTR	static.vdc.vn
222.255.250.112	PTR	static.vdc.vn
222.255.250.115	PTR	static.vdc.vn
222.255.250.128	PTR	static.vdc.vn
222.255.250.130	PTR	static.vdc.vn
222.255.250.144	PTR	static.vdc.vn
222.255.250.145	PTR	static.vdc.vn
222.255.250.146	PTR	static.vdc.vn
222.255.250.160	PTR	static.vdc.vn
222.255.250.161	A+PTR	mail.pvn.vn
222.255.250.162	PTR	static.vnpt.vn
222.255.250.162	A	www.pvn.com.vn
222.255.250.162	A	www.pvn.vn
222.255.250.163	PTR	static.vdc.vn
222.255.250.177	PTR	static.vdc.vn
222.255.250.178	PTR	static.vdc.vn
222.255.250.179	PTR	static.vnpt.vn
222.255.250.189	A	dns2.pvn.vn
222.255.250.190	A	dns1.pvn.vn
222.255.250.193	PTR	static.vdc.vn
222.255.250.208	PTR	static.vdc.vn
222.255.250.211	PTR	static.vdc.vn
222.255.250.224	PTR	static.vdc.vn
222.255.250.226	PTR	ems.com.vn
222.255.250.227	PTR	ems.com.vn
222.255.250.239	A	www.itn.vn
222.255.250.239	A	sql.vn
222.255.250.239	A	adz.vn
222.255.250.240	PTR	static.vdc.vn
222.255.250.241	PTR	static.vdc.vn
222.255.250.242	PTR	static.vdc.vn
222.255.250.251	A	etrack.vn
222.255.251.160	PTR	static.vnpt.vn
222.255.251.254	A	transporter3.vnn.vn
222.255.252.3	PTR	static.vdc.vn
222.255.252.38	A	dautu.pvn.vn
222.255.252.40	A	thitruongdaukhi.pvn.vn
222.255.252.44	A	old.pvn.vn
222.255.252.178	PTR	static.vdc.vn
222.255.254.213	A	zing-vn-bk.mr.outblaze.com
222.255.254.214	A	zing-vn-bk.mr.outblaze.com