Robtex

Up: 171.224.0.0/13
Can't show all results, try to descend to a more specific CIDR
Down left: 171.228.0.0/15
Down right: 171.230.0.0/15
(Some of the IP numbers are capped at 3 entries)

IP	Type	Hostname
171.228.0.90	PTR	dynamic-ip-adsl.viettel.vn
171.228.10.192	PTR	dynamic-ip-adsl.viettel.vn
171.228.15.2	PTR	dynamic-ip-adsl.viettel.vn
171.228.40.17	A	pjrsuprphmi.net
171.228.40.17	A	enkabyfo.com
171.228.40.17	A	ewzcpfmmqry.net
171.228.67.216	PTR	dynamic-ip-adsl.viettel.vn
171.228.132.72	PTR	dynamic-ip-adsl.viettel.vn
171.228.132.72	A	ngoalong.xyz
171.228.136.98	PTR	dynamic-ip-adsl.viettel.vn
171.228.155.172	PTR	dynamic-ip-adsl.viettel.vn
171.228.160.13	PTR	dynamic-ip-adsl.viettel.vn
171.228.165.74	PTR	dynamic-ip-adsl.viettel.vn
171.228.165.92	PTR	dynamic-adsl.viettel.vn
171.228.167.8	PTR	dynamic-adsl.viettel.vn
171.228.167.8	A	ndvinh.com
171.228.170.212	PTR	dynamic-ip-adsl.viettel.vn
171.228.176.150	PTR	dynamic-ip-adsl.viettel.vn
171.228.186.66	A	rustex.ddns.net
171.228.189.191	A	retavideo.com
171.228.189.228	PTR	dynamic-ip-adsl.viettel.vn
171.228.197.56	PTR	dynamic-adsl.viettel.vn
171.228.201.195	PTR	dynamic-ip-adsl.viettel.vn
171.228.204.86	PTR	dynamic-adsl.viettel.vn
171.228.215.122	PTR	dynamic-ip-adsl.viettel.vn
171.228.216.239	PTR	dynamic-adsl.viettel.vn
171.228.242.52	PTR	dynamic-adsl.viettel.vn
171.228.251.15	PTR	dynamic-ip-adsl.viettel.vn
171.229.5.239	PTR	dynamic-ip-adsl.viettel.vn
171.229.65.81	PTR	dynamic-ip-adsl.viettel.vn
171.229.69.14	PTR	dynamic-ip-adsl.viettel.vn
171.229.84.90	PTR	dynamic-ip-adsl.viettel.vn
171.229.119.119	PTR	dynamic-ip-adsl.viettel.vn
171.229.127.121	PTR	dynamic-ip-adsl.viettel.vn
171.229.130.135	PTR	dynamic-ip-adsl.viettel.vn
171.229.165.14	A	server.khanhnguyen.net
171.229.165.14	A	khanhnguyen.net
171.229.173.76	A	thietbihoaluoi.com
171.229.205.229	PTR	dynamic-adsl.viettel.vn
171.229.222.7	A	thongminhvn.com
171.229.226.41	A	www.luatbaochinh.vn
171.229.232.141	A	anhoa.ddns.net
171.229.235.71	PTR	dynamic-adsl.viettel.vn
171.229.236.250	PTR	dynamic-ip-adsl.viettel.vn
171.229.236.250	A	honghai.tk
171.229.241.165	PTR	dynamic-adsl.viettel.vn
171.229.241.165	A	linh.vddns.vn
171.229.247.200	A	sanphambhipglobal.com
171.229.251.14	A	thud3a.com
171.229.252.85	A	khoedeptungngay.com
171.229.254.253	A	mail.ntcvina.com
171.229.255.174	A	nexttopkaraoke.com
171.230.165.17	PTR	dynamic-adsl.viettel.vn
171.231.11.10	A	mail.randrimages.com
171.231.32.16	A	alizevo.com
171.231.32.16	A	mail.alizevo.com
171.231.61.178	PTR	dynamic-adsl.viettel.vn
171.231.117.191	A	sp-rp.tk
171.231.120.130	A	vnloops.com
171.231.120.195	A	www.nemchohuyen4.ddns.net
171.231.120.195	A	nemchohuyen4.ddns.net
171.231.127.18	PTR	dynamic-ip-adsl.viettel.vn
171.231.127.18	A	songhanh.vn
171.231.159.160	A	mail.infor.vn
171.231.178.220	PTR	dynamic-adsl.viettel.vn
171.231.215.231	PTR	dynamic-ip-adsl.viettel.vn
171.231.241.209	PTR	dynamic-ip-adsl.viettel.vn
171.231.241.209	A	lucaso.zapto.org