Robtex

Up: 80.64.168.0/21
Can't show all results, try to descend to a more specific CIDR
Down left: 80.64.172.0/23
Down right: 80.64.174.0/23
(Some of the IP numbers are capped at 3 entries)

IP	Type	Hostname
80.64.172.1	A+PTR	80.64.172.1.sta.211.ru
80.64.172.25	PTR	80.64.172.25.sta.211.ru
80.64.172.25	A	mail.kom-sib.ru
80.64.172.28	PTR	80.64.172.28.sta.211.ru
80.64.172.37	A+PTR	80.64.172.37.sta.211.ru
80.64.172.68	A+PTR	80.64.172.68.sta.211.ru
80.64.172.80	A+PTR	80.64.172.80.sta.211.ru
80.64.172.110	A+PTR	80.64.172.110.sta.211.ru
80.64.172.118	A+PTR	80.64.172.118.sta.211.ru
80.64.172.130	PTR	ns1.3389.ru
80.64.172.130	A	www.nrtk.ru
80.64.172.130	A	ns1.dedenkov.ru
80.64.172.134	PTR	80.64.172.134.sta.211.ru
80.64.172.134	A	mail.hamelephone.com
80.64.172.155	PTR	80.64.172.155.sta.211.ru
80.64.172.155	A	avs-nsk.ru
80.64.172.163	A+PTR	80.64.172.163.sta.211.ru
80.64.172.169	A+PTR	80.64.172.169.sta.211.ru
80.64.172.193	A+PTR	80.64.172.193.sta.211.ru
80.64.172.197	A	ydhs.info
80.64.172.221	PTR	80.64.172.221.sta.211.ru
80.64.172.221	A	24nsk.ru
80.64.172.221	A	evercoat-ru.ru
80.64.172.233	A+PTR	80.64.172.233.sta.211.ru
80.64.172.242	PTR	80.64.172.242.sta.211.ru
80.64.172.242	A	mail.bis077.ru
80.64.172.244	A+PTR	80.64.172.244.sta.211.ru
80.64.172.252	A+PTR	80.64.172.252.sta.211.ru
80.64.173.1	PTR	80.64.173.1.sta.211.ru
80.64.173.16	PTR	80.64.173.16.sta.211.ru
80.64.173.41	A	wifitorg.ru
80.64.173.53	PTR	mail.una-nsk.ru
80.64.173.57	PTR	mail.sovsib.ru
80.64.173.101	PTR	80.64.173.101.sta.211.ru
80.64.173.101	A	mail.nesta.ru
80.64.173.106	PTR	80.64.173.106.sta.211.ru
80.64.173.106	A	mail.rosint.it
80.64.173.106	A	mail.rosintegracija.ru
80.64.173.113	PTR	80.64.173.113.sta.211.ru
80.64.173.113	A	banksnab.ru
80.64.173.114	PTR	80.64.173.114.sta.211.ru
80.64.173.125	A+PTR	mail2.nesta.ru
80.64.173.162	A+PTR	80.64.173.162.sta.211.ru
80.64.173.173	A	80.64.173.173.sta.211.ru
80.64.173.220	PTR	80.64.173.220.sta.211.ru
80.64.173.220	A	ns1.fastline.su
80.64.174.41	A+PTR	80.64.174.41.sta.211.ru
80.64.174.41	A	home.avallac.ru
80.64.174.41	A	avallac.ru
80.64.174.43	A	ns.nastolium.com
80.64.174.48	PTR	80.64.174.48.sta.211.ru
80.64.174.48	A	clickoffice.ru
80.64.174.65	A+PTR	80.64.174.65.sta.211.ru
80.64.174.65	A	gate.vn.ru
80.64.174.78	PTR	80.64.174.78.sta.211.ru
80.64.174.106	A+PTR	80.64.174.106.sta.211.ru
80.64.174.120	PTR	80.64.174.120.sta.211.ru
80.64.175.3	PTR	dc.211.ru
80.64.175.3	A	p2p.academ.org
80.64.175.4	PTR	80.64.175.4.sta.211.ru
80.64.175.4	A	retracker.211.ru
80.64.175.7	PTR	80.64.175.7.sta.211.ru
80.64.175.11	A+PTR	80.64.175.11.sta.211.ru
80.64.175.11	A	cs1.211.ru
80.64.175.14	A	80.64.175.14.sta.211.ru
80.64.175.19	A+PTR	80.64.175.19.sta.211.ru
80.64.175.20	A	80.64.175.20.sta.211.ru
80.64.175.23	A+PTR	80.64.175.23.sta.211.ru
80.64.175.25	A+PTR	80.64.175.25.sta.211.ru
80.64.175.25	A	exerious.ru
80.64.175.57	A+PTR	80.64.175.57.sta.211.ru
80.64.175.68	PTR	cache.google.com
80.64.175.76	A	r1.sn-npcnxu-v8ce.googlevideo.com
80.64.175.78	PTR	cache.google.com
80.64.175.78	A	r3.sn-npcnxu-v8ce.googlevideo.com
80.64.175.78	A	r3---sn-npcnxu-v8ce.googlevideo.com
80.64.175.80	PTR	cache.google.com
80.64.175.80	A	80.64.175.80.sta.211.ru
80.64.175.90	PTR	cache.google.com
80.64.175.92	A	80.64.175.92.sta.211.ru
80.64.175.93	A	80.64.175.93.sta.211.ru
80.64.175.100	A	80.64.175.100.sta.211.ru
80.64.175.106	A	80.64.175.106.sta.211.ru
80.64.175.108	PTR	cache.google.com
80.64.175.112	A	80.64.175.112.sta.211.ru
80.64.175.133	PTR	cache.google.com
80.64.175.140	A	r1.sn-npcnxu-v8cs.googlevideo.com
80.64.175.141	A	r2.sn-npcnxu-v8cs.googlevideo.com
80.64.175.142	A	r3.sn-npcnxu-v8cs.googlevideo.com
80.64.175.171	A	80.64.175.171.sta.211.ru
80.64.175.255	A+PTR	80.64.175.255.sta.211.ru