Robtex

Up: 42.117.4.0/23
Can't show all results, try to descend to a more specific CIDR
Down left: 42.117.4.0/25
Down right: 42.117.4.128/25
(Some of the IP numbers are capped at 3 entries)

IP	Type	Hostname
42.117.4.2	PTR	mail.vtt.com.vn
42.117.4.3	A	mail.iimh-comm.com
42.117.4.3	A	tralaisungman.vn
42.117.4.7	A+PTR	mail.vicoluch.vn
42.117.4.7	A	vicoluch.vn
42.117.4.9	A+PTR	mail.garmexjs.com
42.117.4.21	PTR	mail.viendongcid-hcm.vn
42.117.4.22	PTR	mail.ewosvn.com
42.117.4.23	A+PTR	mail.angelaresidence.com
42.117.4.24	PTR	mail.nanophuocthanh.com
42.117.4.24	PTR	nanoco.com.vn
42.117.4.24	A	mail.nanoco.com.vn
42.117.4.25	A+PTR	mail.vndongyun.com
42.117.4.28	A	longhoangsecurity.com
42.117.4.28	A	nhienlieusinhhoc.net
42.117.4.28	A	xuatkhaulaodongbatimex.net
42.117.4.35	A	mail.idc.fptdata.net
42.117.4.36	PTR	mail.ktaccounting.com.vn
42.117.4.48	A+PTR	mail.fenix.vn
42.117.4.49	A+PTR	mail.vivcogroup.com
42.117.4.52	A+PTR	mail.dafc.com.vn
42.117.4.53	PTR	mail.blissyoga.com.vn
42.117.4.53	A	blissyoga.com.vn
42.117.4.55	PTR	mail.gmc.com.vn
42.117.4.55	A	137.70-static.reverse.laptopone.com.vn
42.117.4.56	A	www.caosudautieng.com.vn
42.117.4.56	A	caosudautieng.com.vn
42.117.4.56	A	dautiengrubber.com.vn
42.117.4.61	PTR	mail.dananggolfclub.com
42.117.4.61	A+PTR	mail.dienvan.com
42.117.4.61	PTR	mail.tranhan.com
42.117.4.62	PTR	kietnt.fptdata.net
42.117.4.62	PTR	mail.khanhnhu.net
42.117.4.67	PTR	mail67.hot.vn
42.117.4.68	A	muachungdeals.net
42.117.4.69	A	thbl.vn
42.117.4.69	A	bltv.vn
42.117.4.70	A	internetdownloadmanager6.com
42.117.4.73	A	*.youtv.vn
42.117.4.73	A	www.youtv.vn
42.117.4.73	A	youtv.vn
42.117.4.74	A+PTR	mail.sahadeal.vn
42.117.4.74	A	fordbinhtrieu.info
42.117.4.74	A	fordrachchiec.com
42.117.4.75	A+PTR	mail.theoceanvillas.com.vn
42.117.4.75	A	mail.vinadanang.com
42.117.4.75	A	mail.vccdanang.com
42.117.4.77	A	aothun.com.vn
42.117.4.77	A	aophong.org
42.117.4.77	A	xuongmaygiacong.com
42.117.4.78	PTR	server78.aothun.vn
42.117.4.79	A	vtvphuyen.vn
42.117.4.85	A	imcgroup.vn
42.117.4.87	A	mail.sntv.vn
42.117.4.88	A	vinafcoship.com.vn
42.117.4.88	A	www.vinafcoship.com.vn
42.117.4.88	A	ketnoiyeuthuong.org
42.117.4.105	A+PTR	mail.batico.com
42.117.4.108	A+PTR	mail.tex-giang.com.vn
42.117.4.110	A	thichchanquang.net
42.117.4.110	A	thientonphatquang.com
42.117.4.110	A	vidaothieng.net
42.117.4.111	A	asia-red.sieuthitaigia.vn
42.117.4.111	A	aaacsc.sieuthitaigia.vn
42.117.4.111	A	czwww.sieuthitaigia.vn
42.117.4.112	PTR	itvina.co
42.117.4.112	A	www.tapdoanelip.com
42.117.4.112	A	www.elipmedical.com
42.117.4.114	PTR	server.svntt.com
42.117.4.114	A	laptrinhasp.net
42.117.4.117	PTR	mail.ledlight.com.vn
42.117.4.117	PTR	mail.minihouse.com.vn
42.117.4.117	A	ebaymotors.ebay.vesinh24h.net
42.117.4.118	A	sanbanh.com
42.117.4.118	A	lambao.co
42.117.4.118	A	smtp.saykool.com
42.117.4.122	PTR	mail.minihouse.com.vn
42.117.4.122	A	madtanks.net
42.117.4.123	A	www.thichchanquang.com
42.117.4.123	A	*.thichchanquang.com
42.117.4.123	A	thichchanquang.com
42.117.4.125	PTR	mail.ceovn.org
42.117.4.125	A	ceoclub.com.vn
42.117.4.133	A+PTR	mail.saigonhomeservices.com
42.117.4.133	PTR	mail.acacy.com.vn
42.117.4.133	A	iedge.acacy.com.vn
42.117.4.134	PTR	mail.spiral.com.vn
42.117.4.134	A	blueforce.acacy.com.vn
42.117.4.134	A	www.acacy.com.vn
42.117.4.137	A	files.thukyluat.vn
42.117.4.137	A	elink.thukyluat.vn
42.117.4.137	A	qc.5giay.vn
42.117.4.138	A	www.h2shop.vn
42.117.4.138	A	www.depmely.com
42.117.4.138	A	linhtinh.5giay.vn
42.117.4.139	A	sumber.tk
42.117.4.139	A	free-net.usa.cc
42.117.4.141	A	we-are-anonymous.tk
42.117.4.147	A	themuglobal.com
42.117.4.147	A	leminhbao.com
42.117.4.147	A	themuglobal.net
42.117.4.153	PTR	web00.trollbongda.com
42.117.4.153	A	cubvn.com
42.117.4.156	A	mail.oaihung.com
42.117.4.157	A	lyjgsy.com
42.117.4.157	A	mail.decotex.com.vn
42.117.4.157	A	decotex.com.vn
42.117.4.158	A	www.phatvietexpress.com
42.117.4.158	A	phatvietexpress.com
42.117.4.159	A	mx.falcontms.com
42.117.4.159	A	mail.falcontms.com
42.117.4.165	A	locanpharma.com
42.117.4.171	A	cheapflight.vn
42.117.4.181	A+PTR	mail.lephung.vn
42.117.4.181	A	www.lephung.vn
42.117.4.181	A	lephung.vn
42.117.4.183	A+PTR	mail.dacologistics.com
42.117.4.183	A	dacologistics.com
42.117.4.183	A	asianalogistics.com.vn
42.117.4.185	A	matrioslim.org
42.117.4.186	A+PTR	mail.hqa.com.vn
42.117.4.188	A	sohot.vn
42.117.4.197	A	azora.vn
42.117.4.199	A	auraerp.com
42.117.4.204	A	www.yduoc360.vn
42.117.4.204	A	nhommuahotdeals.net
42.117.4.204	A	images.muachungdeals.net
42.117.4.205	A	l2talesvn.com
42.117.4.208	A	giadinhvuikhoe.com
42.117.4.208	A	zenith-pos.com
42.117.4.209	A	www.donghopkim.com
42.117.4.209	A	donghopkim.com
42.117.4.209	A	bacmattrang.com
42.117.4.211	A	seemleaf.com
42.117.4.211	A	mail.lefamilyriders.com
42.117.4.211	A	mail.bako.vn
42.117.4.212	A	mail.quanlyhp.com
42.117.4.212	A	mail.timatm.net
42.117.4.212	A	hopdenhp.com
42.117.4.218	A	ex.twomedia.asia
42.117.4.226	PTR	maildr.hanwhalife.com.vn
42.117.4.226	PTR	maildr.korealife.com.vn
42.117.4.231	A+PTR	mail.tksk.com.vn
42.117.4.231	A+PTR	skmail.tksk.com.vn
42.117.4.243	A	sku.vn
42.117.4.243	A	dogotinhxao.com
42.117.4.244	PTR	haravan.com
42.117.4.244	A	banhang360.com
42.117.4.247	A	ns1.hrv.gbnix.com
42.117.4.247	A	ns2.hrv.gbnix.com