Robtex

Up: 91.219.64.0/21
Can't show all results, try to descend to a more specific CIDR
Down left: 91.219.64.0/23
Down right: 91.219.66.0/23
(Some of the IP numbers are capped at 3 entries)

IP	Type	Hostname
91.219.64.0	PTR	optical-networks.opnet.spb.ru
91.219.64.1	A	kl23-bgp.opnet.spb.ru
91.219.64.115	PTR	ip-91-219-64-115.opnet.spb.ru
91.219.64.130	A+PTR	mail.opnet.spb.ru
91.219.64.130	A+PTR	ns.opnet.spb.ru
91.219.64.130	A	ftp.opnet.spb.ru
91.219.64.146	PTR	ip-91-219-64-146.opnet.spb.ru
91.219.64.146	A	ccm1.avvid.opnet.spb.ru
91.219.64.171	PTR	ip-91-219-64-171.opnet.spb.ru
91.219.64.171	A	mail.onegroup.ru
91.219.64.171	A	mx4.sk-atlas.ru
91.219.64.251	PTR	ip-91-219-64-251.opnet.spb.ru
91.219.64.251	A	office.tecore.ru
91.219.64.251	A	mail.tecore.ru
91.219.65.2	A	mail.blago-spb.ru
91.219.65.4	PTR	ip-91-219-65-4.spb.avantel.ru
91.219.65.4	A	mail.domostroy-vdz.ru
91.219.65.4	A	mail.pge.ru
91.219.65.20	A+PTR	ip-91-219-65-20.spb.avantel.ru
91.219.65.20	A	ip-91-219-65-20.opnet.spb.ru
91.219.65.20	A	hleb.ru
91.219.65.21	A+PTR	mail.ukfin.info
91.219.65.42	A+PTR	mail.landl.ru
91.219.65.62	PTR	ip-91-219-65-62.spb.avantel.ru
91.219.65.62	A	ns03.gtrunk.ru
91.219.65.62	A	ns03.ztlc.net
91.219.65.69	A	ip-91-219-65-69.opnet.spb.ru
91.219.65.87	A+PTR	relay.pkbf.org
91.219.65.88	PTR	ip-91-219-65-88.opnet.spb.ru
91.219.65.88	A	mx.kraftspan.ru
91.219.65.88	A	relay.sirokko.com
91.219.65.89	A	mail.armaxgroup.com
91.219.65.92	PTR	ip-91-219-65-92.opnet.spb.ru
91.219.65.92	A	mon-srv.kidspace.ru
91.219.65.99	PTR	ip-91-219-65-99.opnet.spb.ru
91.219.65.99	A	iclj.ru
91.219.65.148	PTR	t92.ru
91.219.65.148	A	mail.schoolkabinet.ru
91.219.65.148	A	u-center.info
91.219.65.198	PTR	ip-91-219-65-198.opnet.spb.ru
91.219.65.198	A	mail.bsg-uk.ru
91.219.65.205	A	ip-91-219-65-205.opnet.spb.ru
91.219.65.212	A+PTR	mail.in-freight.ru
91.219.65.230	PTR	mail.detishop.ru
91.219.65.231	PTR	ip-91-219-65-231.opnet.spb.ru
91.219.65.231	A	mail.mm-alliance.ru
91.219.65.231	A	mail.masterminutka.ru
91.219.65.253	PTR	ip-91-219-65-253.opnet.spb.ru
91.219.65.253	A	mail2.smc-spb.ru
91.219.65.253	A	mail2.sm-complect.ru
91.219.66.3	A+PTR	mail.rost-sp.spb.ru
91.219.66.3	A+PTR	www.rost-sp.spb.ru
91.219.66.3	A	rost-sp.spb.ru
91.219.66.7	PTR	top-trans.spb.ru
91.219.66.9	A	mail.premierdecor.ru
91.219.66.10	A+PTR	ip-91-219-66-10.opnet.spb.ru
91.219.66.10	A	hochutvorit.siluetonline.ru
91.219.66.10	A	siluetonline.ru
91.219.66.36	PTR	ip-91-219-66-36.opnet.spb.ru
91.219.66.36	A	mail1.premierdecor.ru
91.219.66.40	A+PTR	mail.vektorlit.ru
91.219.66.41	A+PTR	np-print.ru
91.219.66.41	A	mail.np-print.ru
91.219.66.43	PTR	ip-91-219-66-43.spb.avantel.ru
91.219.66.43	A	ip-91-219-66-43.opnet.spb.ru
91.219.66.55	A	ip-91-219-66-55.opnet.spb.ru
91.219.66.119	A	relay.fotonarod-spb.ru
91.219.66.119	A	office.interpress.ru
91.219.66.119	A	fotonarod-spb.ru
91.219.66.133	A	ip-91-219-66-133.opnet.spb.ru
91.219.66.163	A+PTR	ip-91-219-66-163.spb.avantel.ru
91.219.66.163	A	www.xn----7sbabbmitl9blls1b.xn--p1ai
91.219.66.163	A	vseviju.ru
91.219.66.194	PTR	ip-91-219-66-194.spb.avantel.ru
91.219.66.194	A	mail.velv.ru
91.219.66.202	A	ip-91-219-66-202.opnet.spb.ru
91.219.66.218	PTR	ip-91-219-66-218.spb.avantel.ru
91.219.66.218	A	conhp.ru
91.219.66.218	A	conhp.com
91.219.66.219	PTR	www.conhp.com
91.219.66.219	PTR	www.nhproject.ru
91.219.66.219	PTR	conhp219.opnet.spb.ru
91.219.66.220	A+PTR	ftp.conhp.com
91.219.66.220	PTR	ftp.nhproject.ru
91.219.66.221	A+PTR	mail.conhp.com
91.219.66.221	A	mail.conhp.ru
91.219.66.233	A	ip-91-219-66-233.opnet.spb.ru
91.219.66.234	PTR	ip-91-219-66-234.opnet.spb.ru
91.219.66.234	A	ns.skvita.ru
91.219.66.234	A	skvita.ru
91.219.67.2	PTR	inet-gw.gumvdspb.ru
91.219.67.2	A+PTR	ns.gumvdspb.ru
91.219.67.2	A	mail.gumvdspb.ru
91.219.67.254	A	pix.gumvdspb.ru