Robtex

Up: 27.72.0.0/16
Can't show all results, try to descend to a more specific CIDR
Down left: 27.72.128.0/18
Down right: 27.72.192.0/18
(Some of the IP numbers are capped at 3 entries)

IP	Type	Hostname
27.72.130.115	PTR	localhost
27.72.131.175	PTR	localhost
27.72.134.16	PTR	localhost
27.72.138.136	PTR	localhost
27.72.143.226	PTR	dynamic-ip-adsl.viettel.vn
27.72.143.226	A	canlvt.ddns.net
27.72.143.226	A	itbag.ddns.net
27.72.144.30	PTR	localhost
27.72.144.30	A	www.uptek.vn
27.72.144.30	A	forever68.com
27.72.144.89	PTR	localhost
27.72.144.89	A	diasoft-hn.com
27.72.144.127	PTR	localhost
27.72.144.133	PTR	localhost
27.72.144.133	A	ketoanaz.net
27.72.144.133	A	mail.mikhaiin.com
27.72.144.140	PTR	localhost
27.72.144.147	PTR	localhost
27.72.144.149	PTR	localhost
27.72.145.99	A	plastic-edu.com
27.72.145.99	A	baotri365.vn
27.72.145.99	A	dinhvigiadinh.com
27.72.146.2	A	khonickre.com
27.72.146.2	A	nickre18.com
27.72.146.2	A	www.thuthecao.com
27.72.146.133	A	bdstaynamkimgiang.com
27.72.146.133	A	kenhvn2.com
27.72.146.133	A	vincity-namtuliem.com
27.72.146.228	PTR	dynamic-ip-adsl.viettel.vn
27.72.147.55	A	pvr.vn
27.72.147.64	PTR	dynamic-ip-adsl.viettel.vn
27.72.147.64	A	www.prowork.vn
27.72.147.64	A	prowork.vn
27.72.147.145	A	adrvn.com
27.72.147.183	A	mail.sunnyvietnam-jsc.com.vn
27.72.147.183	A	sunnyvietnam-jsc.com.vn
27.72.149.159	PTR	dynamic-ip-adsl.viettel.vn
27.72.149.159	A	ftec.edu.vn
27.72.153.86	A	www.thaihung.duckdns.org
27.72.153.86	A	thaihung.duckdns.org
27.72.157.32	PTR	localhost
27.72.157.32	A	vxut.edu.vn
27.72.157.158	PTR	localhost
27.72.157.158	A	fgct.net
27.72.159.127	PTR	localhost
27.72.160.100	PTR	localhost
27.72.186.133	A	mu-hanoiss6.com
27.72.186.133	A	mail.mu-hanoiss6.com
27.72.186.142	PTR	localhost
27.72.186.142	A	mail.mu2gvn.com
27.72.186.142	A	mail.bavuongmu.com
27.72.186.148	PTR	localhost
27.72.192.14	PTR	dynamic-ip-adsl.viettel.vn
27.72.192.100	PTR	localhost
27.72.192.100	A	bienquangcaoanphat.com
27.72.192.100	A	thoitrangmercie.com
27.72.192.212	A	hocweb360.com
27.72.192.213	PTR	localhost
27.72.192.213	A	lasvegas212dn.com
27.72.192.213	A	mail.lasvegas212dn.com
27.72.192.214	PTR	localhost
27.72.193.20	A	moingaylamdep.com
27.72.193.20	A	diemtintrongngay.net
27.72.193.20	A	groupcongnghe.com
27.72.194.12	A	thegioigoiom.com
27.72.194.12	A	www.namduoc.com
27.72.194.13	PTR	localhost
27.72.194.13	A	hisungdoor.net
27.72.195.116	A	thuytranorder.com
27.72.195.116	A	denbaohieu140a.com
27.72.196.19	A	mail1.fpts.com.vn
27.72.196.45	PTR	localhost
27.72.196.45	A	einsighthub.com
27.72.202.57	PTR	localhost
27.72.202.57	A	ns.slvina.com
27.72.208.68	PTR	dynamic-ip-adsl.viettel.vn
27.72.208.68	A	viethasoftware.com
27.72.217.208	A	mail.ns1.*.dns.mail.6.umikl.com
27.72.225.34	PTR	localhost
27.72.228.149	PTR	localhost
27.72.239.71	PTR	localhost
27.72.240.205	PTR	dynamic-ip-adsl.viettel.vn
27.72.247.152	PTR	localhost
27.72.249.148	A	www.hpu.edu.vn
27.72.249.149	A	hpu.edu.vn