Robtex

Up: 42.116.30.0/23
Can't show all results, try to descend to a more specific CIDR
Down left: 42.116.30.0/25
Down right: 42.116.30.128/25
(Some of the IP numbers are capped at 3 entries)

IP	Type	Hostname
42.116.30.50	A	ecs1haproxy.hoasen.edu.vn
42.116.30.50	A	mmt.hoasen.edu.vn
42.116.30.50	A	environment.hoasen.edu.vn
42.116.30.51	A	ecs1haproxy01.hoasen.edu.vn
42.116.30.52	A	huongnghiep.hoasen.edu.vn
42.116.30.52	A	englishzone.edu.vn
42.116.30.52	A	proxy.hoasen.edu.vn
42.116.30.54	A	htttsv02.hoasen.edu.vn
42.116.30.54	A	hosting04.hoasen.edu.vn
42.116.30.58	A	intranet.hoasen.edu.vn
42.116.30.161	PTR	mail1.vietnamstar-auto.com
42.116.30.161	PTR	dns1.vietnamstar-auto.com
42.116.30.180	PTR	mx1.gic.com.vn