Robtex

Up: 123.31.42.0/23
Can't show all results, try to descend to a more specific CIDR
Down left: 123.31.42.0/25
Down right: 123.31.42.128/25
(Some of the IP numbers are capped at 3 entries)

IP	Type	Hostname
123.31.42.8	PTR	static.vnpt.vn
123.31.42.15	PTR	localhost
123.31.42.15	A	mail.volympic.vn
123.31.42.15	A	mail.mlink247.com
123.31.42.17	PTR	static.vnpt.vn
123.31.42.17	A	www.icomm.vn
123.31.42.17	A	static.congnghe.vn
123.31.42.20	PTR	static.vnpt.vn
123.31.42.38	PTR	static.vnpt.vn
123.31.42.44	PTR	static.vnpt.vn
123.31.42.48	PTR	static.vnpt.vn
123.31.42.50	PTR	static.vnpt.vn
123.31.42.51	PTR	static.vnpt.vn
123.31.42.60	PTR	static.vnpt.vn
123.31.42.118	PTR	static.vnpt.vn
123.31.42.118	A	banquyen365.com
123.31.42.118	A	vssdeal.com
123.31.42.120	PTR	static.vnpt.vn
123.31.42.120	A	bodebaclieu.com
123.31.42.121	PTR	static.vnpt.vn
123.31.42.121	A	hycc.edu.vn
123.31.42.121	A	www.hycc.edu.vn
123.31.42.130	PTR	static.vnpt.vn
123.31.42.130	A	muoriginvn.vn
123.31.42.130	A	mudanviet.net
123.31.42.133	PTR	localhost
123.31.42.133	A	www.muwebpro.com
123.31.42.135	PTR	static.vnpt.vn
123.31.42.138	PTR	localhost
123.31.42.138	A	yteso.com
123.31.42.138	A	ungbuoubacgiang.com
123.31.42.141	PTR	static.vnpt.vn
123.31.42.141	A	blackpearl.vn
123.31.42.141	A	www.blackpearl.vn
123.31.42.143	PTR	static.vnpt.vn
123.31.42.143	A	landber.com
123.31.42.144	PTR	static.vnpt.vn
123.31.42.144	A	www.benhsoimat.com
123.31.42.144	A	xn--vimxoangmi-n7a54m.vn
123.31.42.148	PTR	static.vnpt.vn
123.31.42.148	A	www.dieutribenhgut.net
123.31.42.148	A	xn--suythn-ff8b.vn
123.31.42.149	PTR	localhost
123.31.42.149	A	www.hsdt.co
123.31.42.149	A	www.hosoyte.com
123.31.42.155	A	cuuthientruyenky.com
123.31.42.155	A	www.gamepro69.com
123.31.42.155	A	www.khobauhaitac.com
123.31.42.158	PTR	localhost
123.31.42.158	A	khuyentaibac.net
123.31.42.162	PTR	localhost
123.31.42.162	A	emaildoanhnghiep.co
123.31.42.162	A	www.hoibanquyen.com
123.31.42.165	PTR	localhost
123.31.42.165	A	ismq.org.vn
123.31.42.165	A	chuahaclao.net
123.31.42.166	PTR	localhost
123.31.42.166	A	wikisuckhoe.com
123.31.42.166	A	chuathuydau.com
123.31.42.167	PTR	static.vnpt.vn
123.31.42.167	A	www.tamminhduong.net
123.31.42.168	PTR	localhost
123.31.42.168	A	www.dieutribenhgut.net
123.31.42.168	A	benhgaicotsong.com
123.31.42.169	PTR	static.vnpt.vn
123.31.42.169	A	www.chuabenhtramcam.vn
123.31.42.169	A	cayxaden.net
123.31.42.170	PTR	localhost
123.31.42.170	A	tribenhgout.vn
123.31.42.170	A	www.dogongocam.net
123.31.42.183	A	kiemtoan.club
123.31.42.183	A	webmail.adshay.vn
123.31.42.183	A	adshay.vn
123.31.42.188	PTR	static.vnpt.vn
123.31.42.188	A	tuvanluatlk.com
123.31.42.190	A	taxinoibaigiare24h.com
123.31.42.190	A	taxisanbaynoibai24h.com
123.31.42.190	A	congtythamtutoancau.com
123.31.42.191	PTR	static.vnpt.vn
123.31.42.191	A	codien24.com
123.31.42.191	A	maychu2.com
123.31.42.192	PTR	static.vnpt.vn
123.31.42.192	A	hutbephotuytin.com
123.31.42.192	A	www.vesinhuytin.com
123.31.42.197	A	cbdeliquidvietnam.com
123.31.42.200	A	taxidinoibai24h.com
123.31.42.200	A	congtyketoan.vn
123.31.42.200	A	diennuocdienlanhhanoi.com
123.31.42.203	PTR	localhost
123.31.42.203	A	ancaosoftware.com
123.31.42.211	PTR	static.vnpt.vn
123.31.42.211	A	a83.com.vn
123.31.42.214	PTR	static.vnpt.vn
123.31.42.214	A	tezme.vn
123.31.42.214	A	okrs.vn
123.31.42.215	A	redmonsters.vn
123.31.42.215	A	toitapgym.com
123.31.42.215	A	viduokrs.com
123.31.42.216	PTR	static.vnpt.vn
123.31.42.216	A	pizzaparadise.vn
123.31.42.216	A	noithatnhap.vn
123.31.42.217	PTR	static.vnpt.vn
123.31.42.217	A	benhngungay.com
123.31.42.217	A	anchoimienbac.com
123.31.42.219	PTR	localhost
123.31.42.219	A	www.samalipas.com
123.31.42.219	A	www.rocket1h.com
123.31.42.228	A	thoiviet.com.vn
123.31.42.229	PTR	static.vnpt.vn
123.31.42.229	A	xn--auddy-uqa25ah23r.vn
123.31.42.230	PTR	localhost
123.31.42.230	A	mixsig.net
123.31.42.234	A	thuocbocaocap.net
123.31.42.236	PTR	localhost
123.31.42.236	A	mudanviet.net
123.31.42.236	A	www.volammobi.vn
123.31.42.239	PTR	static.vnpt.vn
123.31.42.242	PTR	localhost
123.31.42.242	A	khaibaotamtru.com