Robtex

Up: 37.139.32.0/20
Can't show all results, try to descend to a more specific CIDR
Down left: 37.139.32.0/22
Down right: 37.139.36.0/22
(Some of the IP numbers are capped at 3 entries)

IP	Type	Hostname
37.139.32.78	PTR	smtp.spb.komplektuem.ru
37.139.32.78	A	smtp.spb.potolok.com
37.139.32.182	PTR	mail.ametist.spb.ru
37.139.32.190	A	ns2.mezon.ru
37.139.32.190	A	gate-comfortel.mezon.ru
37.139.33.2	A	smtp.mm2.ru
37.139.33.26	A	mx.comfortel.pro
37.139.33.27	A+PTR	comfortel.pro
37.139.33.106	A	avtopartizan.ru
37.139.33.222	PTR	222.mcs.mail.ru
37.139.33.222	A	ns1.hexcore.ru
37.139.33.229	PTR	region-brand.ru
37.139.33.229	A	rasks.ru
37.139.33.235	A+PTR	v045.s.opentechnology.ru
37.139.33.235	A	www.aiform.ru
37.139.33.235	A	aiform.ru
37.139.33.237	A	mx1.kuzpetroleum.ru
37.139.33.240	PTR	240.mcs.mail.ru
37.139.33.240	A	ns2.opentechnology.ru
37.139.33.247	A	mypicture.ru
37.139.33.247	A	rocketect.com
37.139.35.51	A	mail.acribia.ru
37.139.35.131	A	ns5.it-d.it
37.139.35.131	A	ns5.it-director.it
37.139.35.131	A	ns5.itd.center
37.139.35.134	A	ns1.it-director.it
37.139.35.141	A	webexpeditor.com
37.139.35.158	A+PTR	ts.cs.it-d.it
37.139.35.202	A	it-director.it
37.139.35.202	A	it-d.it
37.139.35.224	PTR	sdom.enf.it-d.it
37.139.35.224	A	sip.enf.it-d.it
37.139.36.7	A	ns1.dengabank.ru
37.139.36.9	A+PTR	www.dengabank.ru
37.139.36.9	A	indenga.ru
37.139.36.9	A	dengabank.com
37.139.36.16	A	denga.pro
37.139.36.16	A	www.denga.ru
37.139.36.17	PTR	ns2.dengabank.ru
37.139.36.33	A+PTR	mail.dengabank.ru
37.139.37.2	A	37-139-37-2.customer.comfortel.pro
37.139.37.4	A+PTR	ns2.greencloud.pro
37.139.37.5	A	geons2.cdn.comfortel.pro
37.139.37.5	A	geons2.comfortel.pro
37.139.37.28	A+PTR	mail.rt-spb.com
37.139.37.35	A	www.rusjob.net
37.139.37.79	A	xn--90acfeqmrcmt.xn--p1ai
37.139.37.80	A	love-lira.ru
37.139.37.80	A	mail.love-lira.ru
37.139.37.80	A	www.love-lira.ru
37.139.37.111	A	svetocopy66.ru
37.139.37.111	A	www.npcsamara.ru
37.139.37.111	A	luxoria-mebel.ru
37.139.37.112	PTR	knight.dns-panel.ru
37.139.37.112	A	flimver.com
37.139.38.15	PTR	sipbalancer-1.ms.zadarma.com
37.139.38.17	A+PTR	sipbalancer-2.ms.zadarma.com
37.139.38.65	A+PTR	proxy-2.ms.zadarma.com
37.139.39.255	PTR	37-139-39-255.ppp-static.loginet.ee