Robtex

Up: 80.73.0.0/23
Can't show all results, try to descend to a more specific CIDR
Down left: 80.73.1.0/25
Down right: 80.73.1.128/25
(Some of the IP numbers are capped at 3 entries)

IP	Type	Hostname
80.73.1.0	PTR	0.1.73.80.triolan.net
80.73.1.1	A+PTR	ns1.sloboda.net
80.73.1.1	A	ns1.bi.com.ua
80.73.1.1	A	ns1.triolan.net
80.73.1.3	A+PTR	map-server.sloboda.net
80.73.1.3	A	service.triolan.com
80.73.1.3	A	map1.sloboda.net
80.73.1.4	PTR	k1.kharkov.tv
80.73.1.4	A	visti.tv
80.73.1.5	A+PTR	d5.sloboda.net
80.73.1.12	A	s2.sloboda.net
80.73.1.24	PTR	24.1.73.80.triolan.net
80.73.1.27	PTR	27.1.73.80.triolan.net
80.73.1.29	PTR	29.1.73.80.triolan.net
80.73.1.30	PTR	30.1.73.80.triolan.net
80.73.1.33	PTR	33.1.73.80.triolan.net
80.73.1.35	A	war.bi.com.ua
80.73.1.42	A	marchenko11.sloboda.net
80.73.1.50	PTR	video1.kharkov.tv
80.73.1.51	A+PTR	port.bi.com.ua
80.73.1.51	A	forum.bi.com.ua
80.73.1.54	PTR	microsof-855f04.sloboda.net
80.73.1.55	A+PTR	nonik.bi.com.ua
80.73.1.56	A+PTR	tema.bi.com.ua
80.73.1.57	A	fockteam.bi.com.ua
80.73.1.58	A	pi100n.bi.com.ua
80.73.1.61	A+PTR	kult.bi.com.ua
80.73.1.62	PTR	gate-metall.bi.com.ua
80.73.1.63	PTR	63.1.73.80.triolan.net
80.73.1.66	PTR	komp.sloboda.net
80.73.1.92	PTR	92.1.73.80.triolan.net
80.73.1.93	A	khadi.bi.com.ua
80.73.1.96	PTR	96.1.73.80.triolan.net
80.73.1.101	PTR	101.1.73.80.triolan.net
80.73.1.102	PTR	102.1.73.80.triolan.net
80.73.1.103	PTR	103.1.73.80.triolan.net
80.73.1.104	PTR	104.1.73.80.triolan.net
80.73.1.105	PTR	105.1.73.80.triolan.net
80.73.1.106	PTR	106.1.73.80.triolan.net
80.73.1.107	PTR	107.1.73.80.triolan.net
80.73.1.108	PTR	108.1.73.80.triolan.net
80.73.1.109	PTR	109.1.73.80.triolan.net
80.73.1.110	A+PTR	stas.sloboda.net
80.73.1.115	A+PTR	basil.bi.com.ua
80.73.1.124	PTR	marchenko11.sloboda.net
80.73.1.125	PTR	125.1.73.80.triolan.net
80.73.1.127	PTR	127.1.73.80.triolan.net
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