Robtex

Up: 80.73.1.0/24
Can't show all results, try to descend to a more specific CIDR
Down left: 80.73.1.128/26
Down right: 80.73.1.192/26
(Some of the IP numbers are capped at 3 entries)

IP	Type	Hostname
80.73.1.129	PTR	ns1.univd.kharkov.ua
80.73.1.131	PTR	adm.univd.kharkov.ua
80.73.1.133	PTR	133.1.73.80.triolan.net
80.73.1.134	PTR	134.1.73.80.triolan.net
80.73.1.135	PTR	135.1.73.80.triolan.net
80.73.1.137	PTR	137.1.73.80.triolan.net
80.73.1.140	A+PTR	mail.hepu.edu.ua
80.73.1.141	A+PTR	hepu.edu.ua
80.73.1.145	A+PTR	aptv.bi.com.ua
80.73.1.146	A+PTR	stolb-dial.bi.com.ua
80.73.1.149	PTR	149.1.73.80.triolan.net
80.73.1.150	A+PTR	stolb.bi.com.ua
80.73.1.152	PTR	ns1.bi.com.ua
80.73.1.153	PTR	ystv.xatax.com
80.73.1.153	A	map.sloboda.net
80.73.1.155	A	fortnox.bi.com.ua
80.73.1.156	A	cs.bi.com.ua
80.73.1.156	A	bnet.sloboda.net
80.73.1.157	A+PTR	pinger.bi.com.ua
80.73.1.157	A	mail3.pinger.bi.com.ua
80.73.1.157	A	mail.pinger.bi.com.ua
80.73.1.158	PTR	158.1.73.80.triolan.net
80.73.1.158	A	mail.l2storm.net
80.73.1.162	A+PTR	koles.sloboda.net
80.73.1.162	A	gate.sloboda.net
80.73.1.162	A	adv.sloboda.net
80.73.1.163	A+PTR	customer.sloboda.net
80.73.1.164	A+PTR	payment.bi.com.ua
80.73.1.165	A	support.bi.com.ua
80.73.1.167	A+PTR	www.basis.sloboda.net
80.73.1.167	A	basis.sloboda.net
80.73.1.175	PTR	175.1.73.80.triolan.net
80.73.1.176	PTR	176.1.73.80.triolan.net
80.73.1.179	A	appl.sloboda.net
80.73.1.181	PTR	k1.kharkov.tv
80.73.1.183	PTR	i2.art-mosaica.com
80.73.1.185	A	cf84c2ef19d9480.sloboda.net
80.73.1.188	A+PTR	mediaser-4cd3be.sloboda.net
80.73.1.189	A+PTR	x7.sloboda.net
80.73.1.194	PTR	194.1.73.80.triolan.net
80.73.1.209	PTR	209.1.73.80.triolan.net
80.73.1.213	PTR	213.1.73.80.triolan.net
80.73.1.217	PTR	217.1.73.80.triolan.net
80.73.1.218	PTR	218.1.73.80.triolan.net
80.73.1.221	PTR	221.1.73.80.triolan.net
80.73.1.225	A	vostok-bi27.bi.com.ua
80.73.1.226	A	bi-vostok27.bi.com.ua
80.73.1.228	PTR	228.1.73.80.triolan.net
80.73.1.233	PTR	233.1.73.80.triolan.net
80.73.1.237	PTR	237.1.73.80.triolan.net
80.73.1.241	PTR	241.1.73.80.triolan.net
80.73.1.246	PTR	246.1.73.80.triolan.net
80.73.1.249	PTR	ofion.bi.com.ua
80.73.1.251	A	ispolkom.bi.com.ua
80.73.1.253	PTR	253.1.73.80.triolan.net
80.73.1.255	PTR	255.1.73.80.triolan.net