Robtex

Up: 178.21.12.0/23
Can't show all results, try to descend to a more specific CIDR
Down left: 178.21.13.0/25
Down right: 178.21.13.128/25
(Some of the IP numbers are capped at 3 entries)

IP	Type	Hostname
178.21.13.3	A	crimea-news.com
178.21.13.3	A	cdn-crimea-news.com
178.21.13.9	A	ns2.yrst.pw
178.21.13.9	A	horizonlogisticsshipping.com
178.21.13.9	A	gbjetdelivery.com
178.21.13.14	A	mx.eas-system.ru
178.21.13.18	A	img.qifa.ru
178.21.13.20	A	specins.ru
178.21.13.22	A	www.maslomart.com
178.21.13.22	A	maslomarket.pro
178.21.13.22	A	www.maslomarket.pro
178.21.13.28	PTR	tree-web.ru
178.21.13.28	A	www.sniip.ru
178.21.13.28	A	nika-light.ru
178.21.13.32	A	www.krasnoyarsk-news.net
178.21.13.32	A	mail.novyny.kr.ua
178.21.13.32	A	krasnoyarsk-news.net
178.21.13.33	A	ksoil.ru
178.21.13.33	A	mail.novgorod-news.net
178.21.13.33	A	www.omsk-news.net
178.21.13.34	A	topnews.pl.ua
178.21.13.34	A	rffk-roo.ru
178.21.13.34	A	ofrshop.com
178.21.13.35	A	ryazan-news.net
178.21.13.35	A	novyny.zt.ua
178.21.13.35	A	ftblmania.am
178.21.13.44	PTR	stroy54.ru
178.21.13.44	A	ex-backpage.com
178.21.13.44	A	ns1.stroy54.ru
178.21.13.46	PTR	mx1.radiomarket.ru
178.21.13.46	A	radiomarket.ru
178.21.13.53	A	xn--eg-5ib.com
178.21.13.55	PTR	d40454.acod.regrucolo.ru
178.21.13.55	A	guesthouse-magnolia.ru
178.21.13.55	A	mail.xn--52-6kcedb8c8abfplkdh0ki.xn--p1ai
178.21.13.61	A	evilsysadmin.org
178.21.13.71	A	jupiter.ozonhost.ru
178.21.13.72	PTR	saturn.ozonhost.ru
178.21.13.72	A	xn--g1ambbbshv.xn--p1ai
178.21.13.72	A	ns2.xn----mtbscbcviy.xn--p1ai
178.21.13.73	A+PTR	sportmag52.ru
178.21.13.73	A	ns1.xn--52-6kcm7blgjgn.xn--p1ai
178.21.13.73	A	xn--52-6kcm7blgjgn.xn--p1ai
178.21.13.74	PTR	modusnsk.ru
178.21.13.74	A	ns1.modusnsk.ru
178.21.13.75	PTR	kontur.ozonhost.ru
178.21.13.75	A	mail.kontur.ozonhost.ru
178.21.13.75	A	mail.vyborlyuks.ru
178.21.13.77	PTR	saturn.ozonhost.ru
178.21.13.77	A	mail.sherpails.com
178.21.13.77	A	mail.xn----mtbscbcviy.xn--p1ai
178.21.13.78	A+PTR	mail-nsk.ru
178.21.13.79	A	ns1.mbu.ru
178.21.13.79	A	mbunion.com
178.21.13.100	A	www.carszp.ru
178.21.13.108	A+PTR	gco-optika.ru
178.21.13.108	A	citi-optika.ru
178.21.13.109	A	www.bonto.ru
178.21.13.109	A	bonto.ru
178.21.13.130	PTR	mxs-3-130.iwannasmtp.com
178.21.13.130	A	xn--80aaej4apiv2bzg.xn--p1ai
178.21.13.130	A	xn--80aaccdo3b4argg5b4f.xn--p1ai
178.21.13.134	PTR	mxs-3-134.efficient-mailing.com
178.21.13.134	A	normel.pro
178.21.13.135	A	www.internet-zone.ru
178.21.13.135	A	internet-zone.ru
178.21.13.138	A+PTR	raui.ru
178.21.13.138	A	www.raui.ru
178.21.13.139	A	grantauto.ru
178.21.13.139	A	www.grantauto.ru
178.21.13.142	A	b2bcabinet.ru
178.21.13.148	PTR	mxs-3-148.email-posting.ru
178.21.13.149	PTR	mxs-3-149.email-rush.com
178.21.13.149	A	mx.ayax.ru
178.21.13.150	PTR	mxs-3-150.ultimate-email.ru
178.21.13.150	A	internet-s.ru
178.21.13.151	PTR	mxs-3-151.mail-king.ru
178.21.13.152	PTR	mxs-3-152.mail-fast.ru
178.21.13.152	A	sdo-regional.ru
178.21.13.152	A	mail.sdo-regional.ru
178.21.13.153	PTR	mxs-3-153.dodgy-mail.ru
178.21.13.153	A	inter-regional.ru
178.21.13.153	A	www.inter-regional.ru
178.21.13.154	PTR	mxs-3-154.mailing-pro-system.ru
178.21.13.154	A	inter-regional.ru
178.21.13.154	A	www.inter-regional.ru
178.21.13.158	PTR	mxs-3-158.mailking.ru
178.21.13.158	A	mail.ytclient.ru
178.21.13.158	A	mail.ytclient.net
178.21.13.161	PTR	mxs-3-161.mailkonkursy.ru
178.21.13.161	A	baner.su
178.21.13.162	A	kupiamway.ru
178.21.13.162	A	mail.kupiamway.ru
178.21.13.172	PTR	mxs-3-172.pro-email-newsletter.ru
178.21.13.172	A	mail.ans-express.ru
178.21.13.175	PTR	mxs-3-175.pro-mail-sender.com
178.21.13.175	A	okna-plastikovie.ru
178.21.13.175	A	runetrulit.com
178.21.13.176	PTR	mxs-3-176.pro-mail-sender.ru
178.21.13.176	A	kvartir-remont.ru
178.21.13.176	A	crv-honda.ru
178.21.13.177	A	www.karaokeyourday.com
178.21.13.178	A	guzhkh.ru
178.21.13.178	A	www.guzhf.ru
178.21.13.178	A	guzhf.ru
178.21.13.179	PTR	mxs-3-179.pro-newsletter.ru
178.21.13.179	A	garderob.su
178.21.13.179	A	ns2.imodnik.com
178.21.13.186	PTR	mxs-3-186.true-newsletter-mail.ru
178.21.13.186	A	www.vosgoradmin.ru
178.21.13.186	A	voslib.ru
178.21.13.189	PTR	mxs-3-189.ultimate-email.com
178.21.13.192	A	ns1.gai.center
178.21.13.197	PTR	aquanet.ru
178.21.13.197	PTR	13.21.178.in-addr.arpa
178.21.13.197	A	www.aquanet.ru
178.21.13.199	PTR	mxs-3-199.rushmail.pro
178.21.13.199	A	mail.xn----7sbeay3b.xn--p1ai
178.21.13.199	A	xn----7sbeay3b.xn--p1ai
178.21.13.200	PTR	mxs-3-200.send-email.ru
178.21.13.200	A	mail.ramol-kazan.ru
178.21.13.202	PTR	mxs-3-202.pro-post.com
178.21.13.202	A	hochuskidok.ru
178.21.13.202	A	onsen86.ru
178.21.13.203	A	ns2.goldcarrot.ru
178.21.13.206	PTR	mxs-3-206.efficient-email.ru
178.21.13.206	A	www.guardbrand.io
178.21.13.206	A	guardbrand.io
178.21.13.208	PTR	mxs-3-208.fast-mail-campaigns.ru
178.21.13.208	A	toramir.ru
178.21.13.210	PTR	mxs-3-210.kontesty.ru
178.21.13.210	A	nzmir.ru
178.21.13.215	A	www.styletopik.ru
178.21.13.215	A	styletopik.ru
178.21.13.217	A	alhikmah-school.com
178.21.13.217	A	test-sites.ru
178.21.13.218	PTR	mxs-3-218.time-to-mail.ru
178.21.13.218	A	rutrevlq.xyz
178.21.13.218	A	www.alipridt.site
178.21.13.219	PTR	mxs-3-219.true-mailing-system.com
178.21.13.219	A	mail.moslogin.ru
178.21.13.219	A	moskva-clean.com
178.21.13.222	PTR	mxs-3-222.true-mailing.ru
178.21.13.224	A	www.toramir.ru
178.21.13.228	A+PTR	mail.mendeleev.ru
178.21.13.228	A	mail1.mendeleev.ru
178.21.13.228	A	mail.mendeleev-it.com
178.21.13.231	PTR	mxs-3-231.freesending.ru
178.21.13.231	A	boogaloo.ru
178.21.13.231	A	rostov.su
178.21.13.232	PTR	web.mamadeti.ru
178.21.13.232	A	lapino-hospital.ru
178.21.13.232	A	gyn-pmc.ru
178.21.13.233	PTR	mxs-3-233.mail-delivery-system.com
178.21.13.233	A	promokodi.net
178.21.13.238	PTR	mxs-3-238.emailsendings.com
178.21.13.238	A	vybirai.ru
178.21.13.238	A	frtii.pw
178.21.13.239	PTR	mxs-3-239.emailkingdom.ru
178.21.13.240	A	kepler.ozonhost.ru
178.21.13.241	A	aptosvideo.com
178.21.13.241	A	www.aptosvideo.com
178.21.13.246	PTR	mail.linorusso.ru
178.21.13.246	A	kubanunipak.ru
178.21.13.246	A	mail.domostroy.com
178.21.13.247	PTR	mxs-3-247.dodgy-email.com
178.21.13.247	A	linit.it
178.21.13.247	A	www.linit.it
178.21.13.248	PTR	mxs-3-248.crazyemail.ru
178.21.13.248	A	masfish.com
178.21.13.248	A	masfish.ru
178.21.13.249	A	rsfasad.ru
178.21.13.249	A	mail.mb-market.ru
178.21.13.249	A	moskow-auto.ru
178.21.13.250	PTR	mxs-3-250.buy-mail.ru
178.21.13.250	A	rostov.su
178.21.13.250	A	mail.moncler.ru
178.21.13.251	A	promokodis.net
178.21.13.252	PTR	gorodled.ru
178.21.13.252	A	cityshop.su
178.21.13.252	A	xn--80azbbakikp.xn--p1ai
178.21.13.253	PTR	mxs-3-253.fast-mailer.ru
178.21.13.254	PTR	mxs-3-254.faster-email.com
178.21.13.254	A	qwir.ru
178.21.13.254	A	0094.ru