Robtex

Up: 103.30.36.0/22
Can't show all results, try to descend to a more specific CIDR
Down left: 103.30.36.0/24
Down right: 103.30.37.0/24
(Some of the IP numbers are capped at 3 entries)

IP	Type	Hostname
103.30.36.1	A+PTR	ns1.bmsc.vn
103.30.36.2	A+PTR	ns2.bmsc.vn
103.30.36.9	A+PTR	web1.bmsc.com.vn
103.30.36.11	A+PTR	push1.bmsc.com.vn
103.30.36.17	PTR	www.bmsc.com.vn
103.30.36.17	A	push1.bmsc.com.vn
103.30.36.17	A	ns1.bmsc.com.vn
103.30.36.18	A+PTR	online.bmsc.com.vn
103.30.36.21	PTR	ip.bmsc.vn
103.30.36.21	A	mail.bmsc.vn
103.30.36.21	A	mail.bmsc.com.vn
103.30.36.22	PTR	ip.bmsc.vn
103.30.36.22	A	bmsc.vn
103.30.36.43	PTR	ip.bmsc.vn
103.30.36.91	PTR	ip.bmsc.vn
103.30.36.91	A	mx1.bmsc.vn
103.30.36.92	PTR	ip.bmsc.vn
103.30.36.92	A	mx2.bmsc.vn