Robtex

Up: 80.66.80.0/23
Can't show all results, try to descend to a more specific CIDR
Down left: 80.66.80.0/25
Down right: 80.66.80.128/25
(Some of the IP numbers are capped at 3 entries)

IP	Type	Hostname
80.66.80.62	A	sibfair.n-sk.net
80.66.80.66	PTR	sladomir.com
80.66.80.68	A	b34722.myipcamera.org
80.66.80.78	A	corner.n-sk.net
80.66.80.124	PTR	kino.nsk.ru
80.66.80.125	PTR	kino.nsk.ru
80.66.80.140	A	megas.ksn.ru
80.66.80.205	PTR	srv2.easyhoster.ru
80.66.80.205	A	yapolitech.ru
80.66.80.205	A	escentre-online.ru
80.66.80.206	A	xn--80aacifcc2cpigaqchgr0o.xn--p1ai
80.66.80.206	A	hotelsfamily.ru
80.66.80.206	A	hotel-milan31.ru
80.66.80.207	A	icanmining.ru
80.66.80.226	A+PTR	kernel.easyhoster.ru
80.66.80.226	A	speedtest.easyhoster.ru
80.66.80.227	PTR	srv1.easyhoster.ru
80.66.80.227	A	alustartur.ru
80.66.80.227	A	artmaxx.ru
80.66.80.228	A+PTR	partytown.ru
80.66.80.246	A+PTR	mx.sib-gurman.ru