Robtex

Up: 81.17.128.0/23
Can't show all results, try to descend to a more specific CIDR
Down left: 81.17.128.0/25
Down right: 81.17.128.128/25
(Some of the IP numbers are capped at 3 entries)

IP	Type	Hostname
81.17.128.1	PTR	proxy.bigline.kharkov.ua
81.17.128.2	PTR	ns.bigline.net
81.17.128.2	A	ns.bigline.ua
81.17.128.2	A	mail2.bigline.kharkov.ua
81.17.128.3	PTR	catalyst.bigline.kharkov.ua
81.17.128.3	A	www.allscience.info
81.17.128.3	A	bigline.ua
81.17.128.4	PTR	mail.bigline.net
81.17.128.4	A	mail.feskov.com
81.17.128.4	A	mail.kspim.kharkov.ua
81.17.128.5	PTR	81-17-128-5.bigline.net
81.17.128.5	A	pokerinukraine.com
81.17.128.7	PTR	81-17-128-7.bigline.net
81.17.128.7	A	mail.uacyber.net
81.17.128.8	PTR	81-17-128-8.bigline.net
81.17.128.8	A	mail.mtl.kharkov.ua
81.17.128.10	PTR	81-17-128-10.bigline.net
81.17.128.10	A	ns1.bigline.net
81.17.128.52	A	nebosvod.bigline.net
81.17.128.70	A+PTR	fresh.bigline.net
81.17.128.98	PTR	metrology.bigline.net
81.17.128.102	A	livingdrizzle.com
81.17.128.102	A	www.vaarse.net
81.17.128.102	A	vaarse.net
81.17.128.106	PTR	mail.ellipse.ua
81.17.128.109	A	bill.bigline.kharkov.ua
81.17.128.122	PTR	radio.bigline.net
81.17.128.132	A+PTR	gps.metrology.kharkov.ua
81.17.128.133	A+PTR	ntpd.metrology.kharkov.ua
81.17.128.136	PTR	81-17-128-136.bigline.net
81.17.128.142	PTR	gw.portal.kharkov.ua
81.17.128.146	A	peace.bigline.net
81.17.128.164	PTR	interfax-1.static.bigline.net
81.17.128.165	A	interfax-2.static.bigline.net
81.17.128.166	A	interfax-3.static.bigline.net
81.17.128.178	A	irisa.bigline.net
81.17.128.182	PTR	mail.metrology.kharkov.ua
81.17.128.182	A	www.metrology.kharkov.ua
81.17.128.182	A	metrology.kharkov.ua
81.17.128.183	A	metrology-bro.static.bigline.net
81.17.128.198	A+PTR	mail.hvz.com.ua
81.17.128.198	A	hvz.com.ua
81.17.128.208	A	network.vaarse.net
81.17.128.209	A	strategy.vaarse.net
81.17.128.210	A	mogwai.vaarse.net
81.17.128.211	A	safe.vaarse.net
81.17.128.222	A	isi.bigline.net
81.17.128.226	PTR	relay.rost.kharkov.ua
81.17.128.238	PTR	mail.mitsubishi-motors.kh.ua
81.17.128.238	A	securiositive.com
81.17.128.246	A	hanaecmp.duckdns.org
81.17.128.250	PTR	khiom.kharkov.ua
81.17.128.255	PTR	81-17-128-255.bigline.net