Robtex

Up: 212.50.0.0/19
Can't show all results, try to descend to a more specific CIDR
Down left: 212.50.16.0/21
Down right: 212.50.24.0/21
(Some of the IP numbers are capped at 3 entries)

IP	Type	Hostname
212.50.16.9	A	office.icn.bg
212.50.16.12	A	kampa.spnet.net
212.50.16.17	PTR	pppoe17.customers.spnet.net
212.50.16.49	PTR	pppoe49.customers.spnet.net
212.50.16.144	PTR	pppoe144.customers.spnet.net
212.50.16.179	PTR	pppoe179.customers.spnet.net
212.50.16.224	PTR	pppoe224.customers.spnet.net
212.50.16.227	PTR	pppoe227.customers.spnet.net
212.50.17.1	A	gateway.comet.bg
212.50.17.3	PTR	www.comet.bg
212.50.17.4	A+PTR	mail.comet.bg
212.50.17.4	A	mx.comet.rs
212.50.17.7	A	comet.bg
212.50.19.65	A	pernik.spnet.net
212.50.20.18	A	proxyfarm.411reports.com
212.50.20.26	A	enterprise-architects.com
212.50.20.26	A	mail.enterprise-architects.com
212.50.20.27	A	businessgroup-consult.com
212.50.20.42	A+PTR	mail.eskana.com
212.50.20.50	PTR	mx1.bonmar.bg
212.50.20.50	A	mx1.toperator.bg
212.50.20.50	A	mx1.seability.bg
212.50.20.58	PTR	swissdentaprime.com
212.50.20.58	A	dentaprime.eu
212.50.20.110	A+PTR	remote.freshup.net
212.50.20.110	A	ns.freshup.net
212.50.20.110	A	mail.freshup.net
212.50.20.116	A	higaticha.com
212.50.20.118	A	mail.ocvbg.com
212.50.20.118	A	ocvbg.com
212.50.20.122	A	mail.ocvbg.com
212.50.20.122	A	ocvbg.com
212.50.20.124	A	ns4.commtech-bg.net
212.50.20.130	A	mns.varna.bg
212.50.20.132	A+PTR	mail.varna.bg
212.50.20.132	A	mail.primorski-varna.com
212.50.20.134	A+PTR	ns1.varna.bg
212.50.20.190	PTR	tostay.net
212.50.21.1	A+PTR	net-bg.net
212.50.21.1	A	teos.biz
212.50.21.1	A	ns.net-bg.net
212.50.21.2	PTR	cat.net-bg.net
212.50.21.3	PTR	dog.net-bg.net
212.50.21.102	A	forest.net-bg.net
212.50.22.1	A	ns2.inet.bg
212.50.22.3	A	ns.inet.bg
212.50.23.86	A+PTR	sf.gopettrans.com
212.50.23.86	A	mailsf.gopettrans.com
212.50.23.121	A	jaguar-bg.org
212.50.23.121	A	www.jaguar-bg.org
212.50.23.172	PTR	darkstar.powervision.bg
212.50.23.226	PTR	indcommerce.spnet.net
212.50.24.3	PTR	x.arenabg.com
212.50.24.132	PTR	vm0.voychin.eu
212.50.24.133	PTR	vm1.voychin.eu
212.50.24.133	A	dns1.forunix.net
212.50.24.133	A	mail.forunix.net
212.50.25.130	PTR	mail.doom.bg
212.50.25.130	A	www.vivi.doom.bg
212.50.25.130	A	support.doom.bg
212.50.26.130	A+PTR	mail.motopfohe.bg
212.50.26.130	A	ns.ford.bg
212.50.26.130	A	motopfohe.bg
212.50.26.131	PTR	131.26.50.212.in-addr.arpa
212.50.26.136	A	www.motopfohe.bg
212.50.26.156	PTR	212.50.26.156
212.50.26.156	A	www.motopfohe.bg
212.50.26.161	PTR	mail.eurogate.bg
212.50.26.161	A	ns.eurogate.bg
212.50.26.161	A	sofia.e-novator.biz
212.50.26.163	PTR	clients.eurogate.bg
212.50.26.196	A	philipov.info
212.50.26.197	PTR	arrow.uptimebg.com
212.50.26.197	A	mail.rabotodatel.bg
212.50.26.197	A	ns.uptimebg.com
212.50.26.214	A+PTR	212-50-26-214.sinetbg.com
212.50.26.244	A	infoyce.org
212.50.26.244	A	koli-shop.de
212.50.27.28	A	office.devin-bg.com
212.50.27.50	PTR	callpointneweurope.spnet.net
212.50.27.82	PTR	mobi-bg.com
212.50.27.82	PTR	handybg.mobi
212.50.27.82	PTR	mobibg.mobi
212.50.27.83	PTR	mail.handybulletin.com
212.50.27.91	A	mail.eols.info
212.50.27.100	PTR	mbox1.vilmat.com
212.50.27.129	PTR	mail.bcserdika.com
212.50.27.129	A	strelcha.net
212.50.27.129	A	armeec-cska.com
212.50.27.130	PTR	mail.bcserdika.com
212.50.27.133	A	mail.ultracom-bg.com
212.50.27.140	A	mail.probike-bg.com
212.50.27.170	PTR	inferno.jarcomputers.com
212.50.27.175	PTR	smtp.ultracom-bg.com
212.50.27.175	A	mail.bigmarket.bg
212.50.27.175	A	mail.ronos.bg
212.50.27.179	PTR	mail.eurosense.bg
212.50.27.194	PTR	mail.sunlight.bg
212.50.27.233	A	ns1.web-optimizacia.com
212.50.28.2	A	transinscars.com
212.50.28.2	A	transins.com
212.50.28.2	A	transinsbattery.com
212.50.28.4	A	transinscars.com
212.50.28.4	A	transins.com
212.50.28.4	A	www.transins.com
212.50.28.26	A+PTR	obrv.eu
212.50.28.26	A	exchange.obrv.eu
212.50.28.26	A	*.obrv.eu
212.50.28.36	A	mail.inlab.bg
212.50.28.74	A	webthoughts.net
212.50.28.74	A	www.webthoughts.net
212.50.28.78	A	mail-relay.isu.bg
212.50.28.89	A	mail.telemond.biz
212.50.28.129	A	fuego2srv.triada.bg
212.50.28.137	A	clients.triada.bg
212.50.28.142	A	meetgadget.info
212.50.28.143	A	db-01.masters.bg
212.50.28.161	A	gw.triada-soft.bg
212.50.28.164	PTR	designer.triada-soft.bg
212.50.28.166	A	turtle.triada.bg
212.50.28.167	A	webmaster.triada.bg
212.50.28.181	A	buldatarex.triada.bg
212.50.28.182	A	buldatainfo.triada.bg
212.50.28.182	A	dhcp-203-145.njit.edu
212.50.28.194	A	ns.odessos-yard.bg
212.50.28.195	A	exchange.odessos-yard.bg
212.50.28.195	A	ramadaistanbul.net
212.50.28.200	A	exchange.odessos-yard.bg
212.50.29.1	PTR	sh-gw.ro-ni.net
212.50.29.1	A	madara.triada.bg
212.50.29.2	A+PTR	sp-hp.ro-ni.net
212.50.29.3	PTR	netstat.ro-ni.net
212.50.29.3	A	proxy.ro-ni.net
212.50.29.3	A	ns.shumen.spnet.net
212.50.29.4	PTR	ns3.ro-ni.net
212.50.29.4	A	firstmdl.com
212.50.29.22	A	elfi.ro-ni.net
212.50.29.66	A	vp.anona.bg
212.50.29.68	PTR	vinex.ro-ni.net
212.50.29.72	A+PTR	mail.vinex.bg
212.50.29.110	A	vetclinic-shumen.com
212.50.29.110	A	*.speedway-bg.com
212.50.29.110	A	electostore.com
212.50.29.122	A	firstmdl.com
212.50.29.122	A	firstmdl-gw.ro-ni.net
212.50.29.129	A	fuego2srv.triada.bg
212.50.29.198	PTR	mm2spnet.leased.triada.bg
212.50.29.198	A	flashnt.com
212.50.29.206	A	ihbshipping.com
212.50.29.206	A	www.ihbshipping.com
212.50.29.206	A	mx.ihbshipping.com
212.50.29.222	A	beach.techno-link.com
212.50.29.234	A	mail.fair-point.com
212.50.29.242	PTR	ns.filbg.com
212.50.29.242	A	hermesbul.org
212.50.31.1	PTR	odessos.net
212.50.31.2	A+PTR	barracuda.odessos.net
212.50.31.2	A	barracuda.ahileos.com
212.50.31.2	A	barracuda.denebinvest.com
212.50.31.3	PTR	lancom.bg
212.50.31.5	PTR	ahileos.com
212.50.31.82	A	mail.aca.bg
212.50.31.137	PTR	router.varna.spnet.net
212.50.31.150	A+PTR	mail.shipsurvey.org
212.50.31.210	A	ns.freshup.bg
212.50.31.225	A	gamepool-gw.doom.bg
212.50.31.228	A	bedlam.doom.bg
212.50.31.229	A	cpl.doom.bg
212.50.31.230	A	diablo.doom.bg