Robtex

Up: 212.36.0.0/19
Can't show all results, try to descend to a more specific CIDR
Down left: 212.36.16.0/21
Down right: 212.36.24.0/21
(Some of the IP numbers are capped at 3 entries)

IP	Type	Hostname
212.36.16.66	A	blackwind.sinetbg.com
212.36.16.67	A	ns5.globaltelenet.com
212.36.16.67	A	warlock.sinetbg.com
212.36.16.68	PTR	mail.sinetbg.com
212.36.16.68	A	mail.chimcomplect.com
212.36.16.90	A+PTR	mail.aroma.bg
212.36.16.99	PTR	mail.meritbg.com
212.36.16.99	PTR	www.meritbg.com
212.36.16.100	PTR	mail.polygrafsnab.com
212.36.16.108	PTR	ns2.bokas-bg.com
212.36.16.129	A+PTR	villox.omega.bg
212.36.16.129	A	ns.villox.omega.bg
212.36.16.129	A	mailhost.novoinvestbulgaria.com
212.36.16.132	A	host-132.villox.omega.bg
212.36.16.145	A	host-145.villox.omega.bg
212.36.16.159	A	host-159.villox.omega.bg
212.36.16.163	A	host-163.villox.omega.bg
212.36.16.164	A	host-164.villox.omega.bg
212.36.16.166	A	host-166.villox.omega.bg
212.36.16.168	A	host-168.villox.omega.bg
212.36.16.178	A	host-178.villox.omega.bg
212.36.16.184	A	host-184.villox.omega.bg
212.36.16.185	A	host-185.villox.omega.bg
212.36.16.187	A	host-187.villox.omega.bg
212.36.16.193	A+PTR	ns.transimpex.bg
212.36.16.193	A	mail.transimpex.bg
212.36.16.193	A	www.transimpex.bg
212.36.18.6	A	m2mos.com
212.36.18.6	A	www.m2mos.com
212.36.19.16	A+PTR	ns2.c3i-inc.com
212.36.19.45	A	ns2.safetyhosting.com
212.36.20.4	PTR	mta1.banksoft-bg.com
212.36.20.4	A	mta1.banker3.net
212.36.20.23	A	ultimat.biz
212.36.20.82	A+PTR	h3.brilliant-bg.com
212.36.20.96	PTR	h1.act.bg
212.36.20.97	PTR	h2.act.bg
212.36.20.98	PTR	h3.act.bg
212.36.20.110	A	cs.thcgroup.net
212.36.20.112	PTR	gk01.techno-link.com
212.36.20.115	PTR	fucker.oplpv.prolink.bg
212.36.20.162	A+PTR	mail.bella.bg
212.36.20.162	A	mail.ultramex.net
212.36.20.162	A	mail.variatibg.com
212.36.20.163	PTR	dummy.techno-link.com
212.36.20.178	PTR	dummy.techno-link.com
212.36.20.192	PTR	dummy1.tu-pld.techno-link.com
212.36.20.194	PTR	gw.greenbalkans.org
212.36.20.208	PTR	h1.druzba.techno-link.com
212.36.20.242	PTR	vgcom0.spnet.net
212.36.21.246	A	ns2.zarhi.com
212.36.21.246	A	ns2.skknet.net
212.36.22.98	PTR	profipet.varna.spnet.net
212.36.22.98	A	ns2.saycle.com
212.36.22.98	A	ns2.authenticbulgaria.org
212.36.22.110	A	mail.not214.com
212.36.22.121	PTR	mx-vn.unimasters.com
212.36.22.121	A	ns.unimasters.com
212.36.22.121	A	ns.marins.bg
212.36.22.198	A	gtw.happy.bg
212.36.22.227	A	ns2.vizicomp.com
212.36.22.228	A	dominionbg.com
212.36.22.228	A	vizicomp.com
212.36.22.228	A	www.vizicomp.com
212.36.24.1	PTR	gw0.bgcell.net
212.36.24.1	A	0.bgp.bgcell.net
212.36.24.2	A+PTR	ns1.xgoth.com
212.36.24.2	A	webmail.bgcell.net
212.36.24.2	A	www.ewhvick.com
212.36.24.6	A	redvertex.com
212.36.24.10	A	gw.bgcell.net
212.36.24.24	A	animatopublishing.com
212.36.24.24	A	casco2000.com
212.36.24.24	A	bg-gkservices.com
212.36.24.66	PTR	66.direct-36-24.bgcell.net
212.36.24.66	A	animatopublishing.com
212.36.24.66	A	alexconsult.biz
212.36.24.80	A	redvertex.com
212.36.24.81	PTR	81.direct-36-24.bgcell.net
212.36.24.81	A	furnitureclinics.bg
212.36.24.81	A	furnitureclinics.ro
212.36.24.100	PTR	100.direct-36-24.bgcell.net
212.36.24.100	A	host.tbros.net
212.36.24.203	A	new-commercial.com
212.36.24.203	A	host.krisr.eu
212.36.24.244	PTR	244.direct-36-24.bgcell.net
212.36.24.244	A	gw.bgcell.net
212.36.24.246	A	krisr.eu
212.36.24.250	A	levski.bg
212.36.24.250	A	new.levski.msk.bg
212.36.25.19	PTR	mail.dekko.net
212.36.25.34	A	nenov3d.com
212.36.26.5	A	mail.euromasterbg.com
212.36.27.25	A	rtgs.spnet.net
212.36.28.26	PTR	mail.dvol.bg
212.36.28.27	PTR	dvol.bg
212.36.28.29	PTR	admin.dvol.bg
212.36.28.90	A	mail.martineli.org
212.36.28.90	A	mail.martineli.eu
212.36.28.154	A	hermitage.solmelia-bg.com
212.36.28.210	A	lunabay.solmelia-bg.com
212.36.29.7	A	grammer.botevgrad.com
212.36.29.18	A	bd-spnet.botevgrad.com
212.36.29.114	PTR	varna.barcodes.bg
212.36.29.114	A	ns1.mobee.bg
212.36.29.114	A	varna.mobee.bg
212.36.29.206	A	obshtina.pravec.com
212.36.29.210	A	rocket-dev.net
212.36.29.217	A	www.etronet.com
212.36.29.217	A	etronet.com
212.36.29.238	A	whj123.tk
212.36.29.238	A	www.sodvarna.com
212.36.29.238	A	ns2.sodvarna.com
212.36.30.20	A	ns2.bonart.bg
212.36.30.20	A	ns2.e-zdrave.bg
212.36.30.58	A	domashno.info
212.36.30.94	A+PTR	mail1.mmc.bg
212.36.30.94	A	ns1.mmc.bg
212.36.30.97	A	mail.deka-bg.com
212.36.30.101	A	mx.mauer.bg
212.36.30.101	A	mx.mauerlocks-bg.com
212.36.30.110	A+PTR	rtr.fair-point.net
212.36.30.117	A	varnacitytour.com
212.36.30.117	A	triumftaxi.com
212.36.30.129	A	a.mx.alfa-service.net
212.36.30.129	A	a.mx.serdika.eu
212.36.30.129	A	mail.alfa-service.net
212.36.30.244	A+PTR	ns.varna.bg
212.36.31.70	A	2create.info
212.36.31.178	PTR	mail.rubiconbg.eu
212.36.31.178	A	mx1.dvbulgaria.com
212.36.31.178	A	rubiconbg.eu
212.36.31.184	A	mail.ecopoolbg.com
212.36.31.186	PTR	mx.eurorscg4d.bg
212.36.31.193	A	mx1.ztcneda.com
212.36.31.206	A	apltrade.com