Robtex

Up: 171.240.0.0/13
Can't show all results, try to descend to a more specific CIDR
Down left: 171.240.0.0/15
Down right: 171.242.0.0/15
(Some of the IP numbers are capped at 3 entries)

IP	Type	Hostname
171.240.11.121	PTR	dynamic-ip-adsl.viettel.vn
171.240.25.154	PTR	dynamic-adsl.viettel.vn
171.240.38.31	PTR	dynamic-adsl.viettel.vn
171.240.48.61	PTR	dynamic-ip-adsl.viettel.vn
171.240.57.143	PTR	dynamic-ip-adsl.viettel.vn
171.240.74.73	PTR	dynamic-adsl.viettel.vn
171.240.75.81	PTR	dynamic-ip-adsl.viettel.vn
171.240.97.226	PTR	dynamic-adsl.viettel.vn
171.240.98.130	PTR	dynamic-adsl.viettel.vn
171.240.103.122	A	sawavn.com
171.240.147.205	PTR	dynamic-ip-adsl.viettel.vn
171.240.158.130	A	nghenhacsan.net
171.240.158.132	PTR	dynamic-ip-adsl.viettel.vn
171.240.181.151	PTR	dynamic-ip-adsl.viettel.vn
171.240.193.221	PTR	dynamic-ip-adsl.viettel.vn
171.240.193.234	PTR	dynamic-adsl.viettel.vn
171.240.241.169	PTR	dynamic-ip-adsl.viettel.vn
171.241.6.62	A	bantayvang.com.vn
171.241.6.62	A	tuanphuong.net
171.241.41.2	A	truckinsurancekentucky.net
171.241.41.192	PTR	dynamic-ip-adsl.viettel.vn
171.241.71.197	PTR	dynamic-ip-adsl.viettel.vn
171.241.72.168	PTR	dynamic-ip-adsl.viettel.vn
171.241.72.168	A	crmtdb.ddns.net
171.241.74.89	PTR	dynamic-ip-adsl.viettel.vn
171.241.74.89	A	mc.luckyvn.com
171.241.88.67	A	eblue3.com
171.241.99.56	A	hoanganhauto.com
171.241.110.211	A	kiendt2.ddns.net
171.241.144.154	A	daututre.net
171.241.158.51	PTR	dynamic-ip-adsl.viettel.vn
171.241.170.204	PTR	dynamic-ip-adsl.viettel.vn
171.241.185.183	A	srv2.chuyencntt.tk
171.241.185.183	A	srv1.chuyencntt.tk
171.241.193.159	PTR	dynamic-adsl.viettel.vn
171.242.9.128	A	ns4.etofhsremk.com
171.242.9.128	A	ns2.etofhsremk.com
171.242.9.128	A	etofhsremk.com
171.242.50.126	PTR	dynamic-adsl.viettel.vn
171.242.53.77	A	www.mu-viettel.com
171.242.74.194	A	international-tourguide.org
171.242.77.104	PTR	dynamic-ip-adsl.viettel.vn
171.242.77.247	PTR	dynamic-ip-adsl.viettel.vn
171.242.79.161	A	xummofqg.com
171.242.79.161	A	ns4.xummofqg.com
171.242.79.161	A	ns2.xummofqg.com
171.242.81.254	PTR	dynamic-ip-adsl.viettel.vn
171.242.99.246	PTR	dynamic-ip-adsl.viettel.vn
171.242.123.6	PTR	dynamic-ip-adsl.viettel.vn
171.242.125.84	PTR	dynamic-adsl.viettel.vn
171.242.126.110	PTR	dynamic-adsl.viettel.vn
171.242.180.206	PTR	dynamic-ip-adsl.viettel.vn
171.242.202.134	A	kjcpfno.com
171.242.233.97	PTR	dynamic-ip-adsl.viettel.vn
171.243.20.184	PTR	dynamic-ip-adsl.viettel.vn
171.243.42.100	A	newhomearc.com
171.243.52.50	A	vpg.net.vn
171.243.69.234	A	daptungsan.com
171.243.99.251	PTR	dynamic-adsl.viettel.vn
171.243.99.251	A	hxrzysb.tbrztrgrdhdx.hath.network
171.243.118.183	PTR	dynamic-ip-adsl.viettel.vn
171.243.193.201	PTR	dynamic-ip-adsl.viettel.vn
171.243.235.71	PTR	dynamic-ip-adsl.viettel.vn
171.243.235.71	A	www.thiepcuoiphuyen.com
171.243.235.71	A	thiepcuoiphuyen.com