Robtex

Up: 27.65.192.0/21
Can't show all results, try to descend to a more specific CIDR
Down left: 27.65.196.0/23
Down right: 27.65.198.0/23
(Some of the IP numbers are capped at 3 entries)

IP	Type	Hostname
27.65.196.192	A	smtp.saigonco-op.vn
27.65.196.192	A	mail.coopmart.vn
27.65.196.192	A	smtp.coopmart.vn
27.65.196.193	A	smtp.saigonco-op.vn
27.65.196.193	A	smtp.coopmart.vn
27.65.196.193	A	smtp.saigonco-op.com.vn
27.65.196.194	A	co-opmart.com.vn
27.65.196.194	A	coopmart.vn
27.65.196.200	A	smtp.saigonco-op.vn
27.65.196.200	A	smtp.coopmart.vn
27.65.196.200	A	smtp.saigonco-op.com.vn
27.65.196.201	A	smtp.saigonco-op.vn
27.65.196.201	A	mail.coopmart.vn
27.65.196.201	A	smtp.coopmart.vn
27.65.197.3	PTR	localhost
27.65.197.3	A	ns3.yuanta.com.vn
27.65.197.3	A	ns3.ysfuture.vn
27.65.197.11	A	mapi.yuanta.com.vn
27.65.197.12	PTR	localhost
27.65.197.12	A	yswinner.yuanta.com.vn
27.65.197.14	PTR	localhost
27.65.197.14	A	www.ysfuture.vn
27.65.197.14	A	ysfuture.vn
27.65.198.2	A	mb.vietbank.com.vn
27.65.198.184	A+PTR	mailpos.ptsc.com.vn
27.65.198.185	A+PTR	mail.ptsc.com.vn