Robtex

Up: 220.231.112.0/20
Can't show all results, try to descend to a more specific CIDR
Down left: 220.231.120.0/22
Down right: 220.231.124.0/22
(Some of the IP numbers are capped at 3 entries)

IP	Type	Hostname
220.231.120.0	PTR	localhost
220.231.120.11	PTR	localhost
220.231.120.56	PTR	localhost
220.231.120.138	PTR	localhost
220.231.121.1	A	viettelvas.vn
220.231.121.1	A	www.viettelvas.vn
220.231.121.12	A+PTR	mrs.mobimail.viettel.com.vn
220.231.121.14	A	mobimail.viettel.com.vn
220.231.121.14	A	imail.vietteltelecom.vn
220.231.121.14	A	www.mobimail.viettel.com.vn
220.231.121.15	PTR	mrs2.mobimail.viettel.com.vn
220.231.121.27	A	tracuocadsl.vietteltelecom.vn
220.231.121.96	A+PTR	mail.vietteltelecom.vn
220.231.122.68	A	pgdhalong.edu.vn
220.231.122.68	A	www.pgdmongcai.edu.vn
220.231.122.68	A	quangninh.edu.vn
220.231.122.98	A	erevl.com
220.231.122.98	A	fit.vinhuni.edu.vn
220.231.122.99	A	a1k48-hs.net
220.231.122.99	A	luyenthib1.com
220.231.122.105	A	www.phim07.com
220.231.122.105	A	kyucteen.info
220.231.122.105	A	www.kyucteen.info
220.231.122.113	A	dns1.nuce.edu.vn
220.231.122.114	A	www.nuce.edu.vn
220.231.122.114	A	vlxd.nuce.edu.vn
220.231.122.114	A	dns2.nuce.edu.vn
220.231.122.222	A	daihochalong.edu.vn
220.231.122.242	A	sv14.tlu.edu.vn
220.231.122.243	A	thanglongsolution.com
220.231.122.243	A	globits.net
220.231.122.243	A	thanglongvina.com
220.231.122.249	A	ns.tuvan123.com
220.231.122.250	A	cse.wru.edu.vn
220.231.122.250	A	fem.wru.edu.vn
220.231.122.250	A	bkcte.com
220.231.122.251	A	ns.tuvan123.com
220.231.123.51	PTR	localhost
220.231.123.97	PTR	localhost
220.231.123.97	A	elearning.erp.viettel.vn
220.231.124.17	PTR	mailfilter-in.th35.com.vn
220.231.124.35	PTR	localhost
220.231.124.153	PTR	localhost
220.231.124.211	PTR	localhost
220.231.125.138	PTR	localhost
220.231.126.113	PTR	localhost
220.231.126.117	A	baohiemthatnghiep.vn
220.231.126.117	A	vieclamhanoi.net
220.231.126.120	PTR	localhost
220.231.126.120	A	ldnn.trinam.com.vn
220.231.126.120	A	18001567.vn
220.231.126.121	PTR	localhost
220.231.126.121	A	vtick.com
220.231.126.123	PTR	localhost
220.231.126.123	A	vieclamhanoi.net
220.231.126.129	PTR	localhost
220.231.126.132	A	sodepvtc.com
220.231.126.133	A	*.vieclamvietnam.gov.vn
220.231.126.145	A+PTR	mail.chinhphu.vn
220.231.126.146	PTR	localhost
220.231.126.147	A+PTR	mx1.chinhphu.vn
220.231.126.218	PTR	localhost
220.231.126.218	A	www.svic.vn
220.231.126.218	A	svic.vn
220.231.127.1	PTR	localhost
220.231.127.3	PTR	localhost
220.231.127.9	PTR	localhost
220.231.127.10	PTR	localhost
220.231.127.11	PTR	localhost