Robtex

Up: 91.143.128.0/19
Can't show all results, try to descend to a more specific CIDR
Down left: 91.143.128.0/21
Down right: 91.143.136.0/21
(Some of the IP numbers are capped at 3 entries)

IP	Type	Hostname
91.143.130.1	A+PTR	ns.regionset.ru
91.143.130.1	A	ns1.regionnet.ru
91.143.130.1	A	ns1.regionset.net
91.143.130.2	PTR	rt.rset.ru
91.143.130.65	PTR	danya2.regionset.ru
91.143.130.81	PTR	sveta-t.regionset.ru
91.143.130.190	A	zh-crt-vlan031-gw-190.regionset.ru
91.143.130.254	A	zh-crt-vlan032-gw-254.regionset.ru
91.143.131.0	PTR	net-131.143.91.in-addr.arpa.regionset.net
91.143.131.3	A	ns2.regionset.net
91.143.131.4	A	vgk.regionset.net
91.143.131.8	A	dofu.ru
91.143.131.8	A	niva.su
91.143.131.25	A+PTR	mx.regionset.net
91.143.131.25	A	mail.regionset.net
91.143.131.25	A	mx.rset.ru
91.143.131.33	A	mysql.regionset.net
91.143.131.53	A+PTR	ns.regionset.net
91.143.131.56	A+PTR	sip.regionset.net
91.143.131.57	A+PTR	irc.regionnet.ru
91.143.131.255	PTR	bcast-131.143.91.in-addr.arpa.regionset.net
91.143.132.29	A	zodchiy.regionset.ru
91.143.132.112	PTR	miki2.regionset.ru
91.143.133.35	A	asp.regionset.ru
91.143.134.23	A	fenix30.regionset.ru
91.143.134.28	A	fut.regionset.ru
91.143.135.65	PTR	stomatolog.regionset.ru
91.143.135.65	A	xn--e1ajmaped4f.xn--p1ai
91.143.135.65	A	xn----ztbbcbh.xn--p1ai
91.143.135.117	A	harchikov.regionset.ru
91.143.135.217	A	anyutka.regionset.ru
91.143.136.1	A+PTR	mail.gotek.ru
91.143.136.1	A	mx.gotek.ru
91.143.136.1	A	gotek.ru
91.143.136.3	PTR	it.gotek.ru
91.143.137.102	A	elena-z.regionset.ru
91.143.137.144	A	bozhko.regionset.ru
91.143.138.76	A	cvetik.regionset.ru
91.143.138.162	A	julia55-flat.regionset.ru
91.143.138.238	A	andrey-w-flat.regionset.ru
91.143.140.253	A	ip-kolomoec.regionset.ru
91.143.141.137	A	dunasha.regionset.ru