Robtex

Up: 27.72.56.0/21
Can't show all results, try to descend to a more specific CIDR
Down left: 27.72.56.0/23
Down right: 27.72.58.0/23
(Some of the IP numbers are capped at 3 entries)

IP	Type	Hostname
27.72.56.28	PTR	localhost
27.72.56.28	A	kb.ftl.vn
27.72.56.28	A	products.php.kb.ftl.vn
27.72.56.125	PTR	localhost
27.72.56.142	PTR	localhost
27.72.56.142	A	fsivietnam.com.vn
27.72.56.142	A	fsivietnam.vn
27.72.56.186	PTR	localhost
27.72.56.186	A	habanosvn.com
27.72.56.186	A	www.mamnonminhduong.edu.vn
27.72.56.196	PTR	localhost
27.72.56.196	A	quantridn.com
27.72.56.217	PTR	localhost
27.72.56.244	PTR	localhost
27.72.56.246	PTR	localhost
27.72.57.17	PTR	localhost
27.72.57.17	A	hyundai-hn.com
27.72.57.45	PTR	localhost
27.72.57.55	PTR	localhost
27.72.57.124	PTR	dynamic-ip-adsl.viettel.vn
27.72.57.124	A	truyen-api.sachmem.vn
27.72.57.124	A	comments.sachmem.vn
27.72.57.151	PTR	localhost
27.72.57.151	A	tonkinland.com
27.72.57.151	A	www.quangcaosanbay.net
27.72.57.169	A	ttgroupphonoi.com
27.72.57.169	A	tafalo.com
27.72.57.215	PTR	localhost
27.72.57.215	A	thegioithedientu.com
27.72.57.215	A	www.xpay.com.vn
27.72.57.251	PTR	dynamic-adsl.viettel.vn
27.72.57.251	A	phuquygold.com.vn
27.72.57.251	A	www.giavang24h.com
27.72.58.78	A+PTR	mail.trucbach.vn
27.72.58.78	A	trucbach.vn
27.72.58.78	A	ytuongmoi.com.vn
27.72.58.160	A	grdsolution.com
27.72.58.237	A	bdviet.org
27.72.59.9	PTR	localhost
27.72.59.209	PTR	localhost
27.72.59.253	A	qbvptrhagiang.vn
27.72.59.253	A	www.siteam.vn
27.72.59.253	A	codetechone.com