Robtex

Up: 213.135.64.0/20
Can't show all results, try to descend to a more specific CIDR
Down left: 213.135.72.0/22
Down right: 213.135.76.0/22
(Some of the IP numbers are capped at 3 entries)

IP	Type	Hostname
213.135.72.40	PTR	undefined-ip.obladm.msk.su
213.135.72.49	PTR	winntas.obladm.msk.su
213.135.72.58	PTR	undefined-ip.obladm.msk.su
213.135.72.64	PTR	undefined-ip.obladm.msk.su
213.135.72.66	PTR	undefined-ip.obladm.msk.su
213.135.72.80	PTR	undefined-ip.obladm.msk.su
213.135.72.89	PTR	undefined-ip.obladm.msk.su
213.135.72.99	PTR	undefined-ip.obladm.msk.su
213.135.72.122	PTR	undefined-ip.obladm.msk.su
213.135.72.170	PTR	undefined-ip.obladm.msk.su
213.135.72.184	PTR	undefined-ip.obladm.msk.su
213.135.72.209	PTR	undefined-ip.obladm.msk.su
213.135.72.225	PTR	undefined-ip.obladm.msk.su
213.135.72.227	PTR	undefined-ip.obladm.msk.su
213.135.72.247	A	router.obladm.msk.su
213.135.72.252	A	obladm.tsr.ru
213.135.73.245	A	infosport.ru
213.135.75.10	A+PTR	mail.kdsk.spb.ru
213.135.75.10	A	rdp.kdsk.spb.ru
213.135.75.130	A	mx.aport-petfood.ru
213.135.75.132	A+PTR	ns.zooexpress.ru
213.135.75.132	A	ns.zooexpress-opt.ru
213.135.75.146	A+PTR	mx1.industri.ru
213.135.75.146	A	office.industri.ru
213.135.75.146	A	mx.industri.ru
213.135.75.234	PTR	ex.agropak.ru
213.135.76.102	A	estp-invest.ru
213.135.76.102	A	estp-blog.ru
213.135.76.154	A+PTR	new.baltmet.ru
213.135.76.154	A	gw.baltmet.ru
213.135.76.174	PTR	tigertele.com
213.135.76.229	A	gate053.naukanet.ru
213.135.77.129	A	www.comtech.ru
213.135.77.129	A	vx-351.ru
213.135.77.129	A	tjelectric.ru
213.135.77.130	PTR	mx2.unicomm.ru
213.135.77.194	PTR	mail.best-jew.ru
213.135.77.197	PTR	mail.au-jew.ru
213.135.78.234	PTR	ex.sng-service.ru
213.135.78.234	A	sng-service.ru
213.135.78.237	A	crimebtc.com