Robtex

Up: 220.231.92.0/23
Can't show all results, try to descend to a more specific CIDR
Down left: 220.231.93.0/25
Down right: 220.231.93.128/25
(Some of the IP numbers are capped at 3 entries)

IP	Type	Hostname
220.231.93.18	A	hui.edu.vn
220.231.93.18	A	cspb.hui.edu.vn
220.231.93.18	A	ttcnpm.hui.edu.vn
220.231.93.20	A	lib.hui.edu.vn
220.231.93.20	A	lib.iuh.edu.vn
220.231.93.21	A	thanhtoanhocphi.iuh.edu.vn
220.231.93.22	A	egov.hui.edu.vn
220.231.93.22	A	egov.iuh.edu.vn
220.231.93.23	A	giautindulieu.com
220.231.93.23	A	gs.hui.edu.vn
220.231.93.27	A	sdh.iuh.edu.vn
220.231.93.27	A	faa.edu.vn
220.231.93.27	A	pdt.iuh.edu.vn
220.231.93.46	PTR	mail.tdt.edu.vn
220.231.93.51	PTR	mail.tdt.edu.vn
220.231.93.65	PTR	ns1.sbsc.com.vn
220.231.93.65	A	ns2.sbsc.com.vn
220.231.93.65	A	mail.sbsc.com.vn
220.231.93.66	PTR	mail.sbsc.com.vn
220.231.93.66	A	www.strade.com.vn
220.231.93.66	A	strade.com.vn
220.231.93.67	PTR	mail.sbsc.com.vn
220.231.93.68	A+PTR	m68.sbsc.com.vn
220.231.93.69	PTR	mx.sbsc.com.vn
220.231.93.85	PTR	mail.hcmulaw.edu.vn
220.231.93.99	PTR	mail.rissaigon.edu.vn
220.231.93.116	PTR	mail.baoangiang.com.vn
220.231.93.131	PTR	smtp.ptsc.com.vn
220.231.93.132	A+PTR	pop.ptsc.com.vn
220.231.93.132	A	mailpma.ptsc.com.vn
220.231.93.133	A	smtp1.ptsc.com.vn
220.231.93.133	A	mail-vtu.ptsc.com.vn
220.231.93.134	A+PTR	smtp.ptsc.com.vn
220.231.93.209	A	www.sags.vn
220.231.93.209	A	sags.vn
220.231.93.211	A+PTR	mail.sags.vn
220.231.93.212	PTR	mail.saam.vn
220.231.93.250	PTR	mail.kusto.com.vn
220.231.93.251	PTR	mail.btadi.com