Robtex

Up: 77.91.194.0/23
Can't show all results, try to descend to a more specific CIDR
Down left: 77.91.195.0/25
Down right: 77.91.195.128/25
(Some of the IP numbers are capped at 3 entries)

IP	Type	Hostname
77.91.195.16	A+PTR	mail.advansystems.ru
77.91.195.16	A	mail1.advansystems.ru
77.91.195.16	A	mail3.energoprom.com
77.91.195.30	PTR	alfa.inter-connect.ru
77.91.195.30	A	ns2.megaperec.ru
77.91.195.30	A	ns1.knowledge-db.ru
77.91.195.34	A+PTR	rt.tslab.ru
77.91.195.34	A	smtp2.tslab.ru
77.91.195.34	A	tslab.ru
77.91.195.58	PTR	host-77.91.195.58.vernet.su
77.91.195.58	A	mail2.advansystems.ru
77.91.195.58	A	mx2.energoprom.com
77.91.195.67	A	www.liquid.pro
77.91.195.75	PTR	host-77.91.195.75.vernet.su
77.91.195.75	A	tslab.co
77.91.195.75	A	tradesystemslab.ru
77.91.195.78	PTR	host-77.91.195.78.vernet.su
77.91.195.100	PTR	bbcomp.ru
77.91.195.101	PTR	host-77.91.195.101.vernet.su
77.91.195.109	A	makuba.ru
77.91.195.114	PTR	host-77.91.195.114.vernet.su
77.91.195.117	A	www.sky-water.ru
77.91.195.117	A	www.appollo-shop.ru
77.91.195.118	PTR	host-77.91.195.118.vernet.su
77.91.195.118	A	www.sky-water.ru
77.91.195.118	A	1001vanna.ru
77.91.195.127	A	xn----7sbabgn6bcef2aevo8b3dzc5c.xn--p1ai
77.91.195.127	A	xn----7sbbflczihi8ayne3b2i.xn--p1ai
77.91.195.128	PTR	host-77.91.195.128.vernet.su
77.91.195.128	A	anomaly.ru
77.91.195.128	A	www.iaga.ru
77.91.195.155	PTR	host-77.91.195.155.vernet.su
77.91.195.155	A	geomatches.com
77.91.195.155	A	belikov.net
77.91.195.165	A+PTR	londona.net
77.91.195.165	A	ns.londona.net
77.91.195.168	PTR	host-77.91.195.168.vernet.su
77.91.195.190	A	mail.tech-fin.ru
77.91.195.197	PTR	host-77.91.195.197.vernet.su
77.91.195.205	PTR	host-77.91.195.205.vernet.su
77.91.195.205	A	fontura.ru
77.91.195.210	PTR	mail.kudel.biz
77.91.195.210	A	xn--d1acng1b7c.xn--p1ai
77.91.195.210	A	kudel.vernet.su
77.91.195.220	PTR	host-77.91.195.220.vernet.su
77.91.195.220	A	imarlan.ru
77.91.195.220	A	www.observ.org
77.91.195.222	PTR	delta.inter-connect.ru
77.91.195.222	A	soyuzzakona.ru
77.91.195.222	A	www.russian-authors.ru
77.91.195.232	PTR	host-77.91.195.232.vernet.su
77.91.195.233	A	vovremya.org