Robtex

Up: 91.196.156.0/22
Can't show all results, try to descend to a more specific CIDR
Down left: 91.196.158.0/24
Down right: 91.196.159.0/24
(Some of the IP numbers are capped at 3 entries)

IP	Type	Hostname
91.196.158.16	A+PTR	host-16-158.rnc.com.ua
91.196.158.26	PTR	mail.venbest.com.ua
91.196.158.67	A+PTR	host-67-158.rnc.com.ua
91.196.158.79	A+PTR	host-79-158.rnc.com.ua
91.196.158.83	PTR	host-83-158.rnc.com.ua
91.196.158.83	A	relay.hb.com.ua
91.196.158.83	A	mail.empireyachts.holdings
91.196.158.84	A+PTR	smtp.ufi.com.ua
91.196.158.84	A	mail.ffum.com.ua
91.196.158.84	A	relay.ufi.com.ua
91.196.158.85	PTR	smtp2.ufi.com.ua
91.196.158.98	PTR	ow221.texha.com
91.196.158.100	PTR	mail2.texha.ua
91.196.158.118	A	host-118-158.rnc.com.ua
91.196.158.135	PTR	guest.btlagency.com
91.196.158.142	A	host-142-158.rnc.com.ua
91.196.158.154	PTR	host-154-158.rnc.com.ua
91.196.158.154	A	relay.angel.org.ua
91.196.158.165	A+PTR	host-165-158.rnc.com.ua
91.196.158.178	PTR	host-178-158.rnc.com.ua
91.196.158.178	A	gw4.upp.com.ua
91.196.158.203	A+PTR	host-203-158.rnc.com.ua
91.196.158.204	A+PTR	host-204-158.rnc.com.ua
91.196.158.204	A	pc210.uptime.kiev.ua
91.196.158.204	A	mx2.ds.ua
91.196.158.221	A	host-221-158.rnc.com.ua
91.196.158.250	A+PTR	host-250-158.rnc.com.ua
91.196.159.5	A	iu-is03.arnit.com.ua
91.196.159.41	A	host-41-159.rnc.com.ua
91.196.159.48	A+PTR	host-48-159.rnc.com.ua
91.196.159.62	A+PTR	mail.oreol-1.com.ua
91.196.159.62	A	mail.mix-flowers.ru
91.196.159.68	A+PTR	host-68-159.rnc.com.ua
91.196.159.69	PTR	host-69-159.rnc.com.ua
91.196.159.69	A	mail.ideaprint.com.ua
91.196.159.70	A+PTR	mail.budcentre.com.ua
91.196.159.75	A+PTR	host-75-159.rnc.com.ua
91.196.159.80	A	host-80-159.rnc.com.ua
91.196.159.81	A+PTR	mail.fas.com.ua
91.196.159.84	PTR	mail.mksbrok.com.ua
91.196.159.87	A+PTR	unix.decosun.com.ua
91.196.159.87	A	mail.decosun.com.ua
91.196.159.89	A+PTR	host-89-159.rnc.com.ua
91.196.159.92	A	host-92-159.rnc.com.ua
91.196.159.93	A+PTR	host-93-159.rnc.com.ua
91.196.159.93	A	mail.bodo.ua
91.196.159.94	A+PTR	mail.provision-group.com.ua
91.196.159.96	A+PTR	relay.arka-hitech.com.ua
91.196.159.97	A+PTR	mail2.michurin.com.ua
91.196.159.100	A+PTR	host-100-159.rnc.com.ua
91.196.159.103	A	host-103-159.rnc.com.ua
91.196.159.105	A+PTR	host-105-159.rnc.com.ua
91.196.159.106	A	kiev-ukraine.co.uk
91.196.159.106	A	host-106-159.rnc.com.ua
91.196.159.109	A+PTR	host-109-159.rnc.com.ua
91.196.159.109	A	srv022.infosafe.ua
91.196.159.119	A+PTR	host-119-159.rnc.com.ua
91.196.159.120	A+PTR	host-120-159.rnc.com.ua
91.196.159.121	A	mail.denza.com.ua
91.196.159.129	A+PTR	host-129-159.rnc.com.ua
91.196.159.137	A	host-137-159.rnc.com.ua
91.196.159.141	A+PTR	mail.usptech.kiev.ua
91.196.159.142	PTR	usts.kiev.ua
91.196.159.142	A	mail.usts.kiev.ua
91.196.159.143	PTR	mail.yanser.com
91.196.159.143	A	mail.kleo-fashion.com
91.196.159.143	A	mail2.yanser.com.ua
91.196.159.146	A+PTR	mail.little-one.com
91.196.159.173	A	nnn.kiev.ua
91.196.159.173	A	mx15.nnn.kiev.ua
91.196.159.186	A	host-186-159.rnc.com.ua
91.196.159.197	PTR	post.silence.com.ua
91.196.159.197	A	*.klancs.net.ua
91.196.159.197	A	klancs.net.ua
91.196.159.201	A+PTR	host-201-159.rnc.com.ua
91.196.159.202	A	host-202-159.rnc.com.ua
91.196.159.203	A+PTR	sc-agg.com.ua
91.196.159.211	A+PTR	mail.romana-mobil.com.ua
91.196.159.212	PTR	mail.bk-misto.com
91.196.159.212	A	mail.svm-bud.com.ua
91.196.159.219	A+PTR	mail.polybags.com.ua
91.196.159.219	A	polybags.com.ua
91.196.159.228	A	host-228-159.rnc.com.ua
91.196.159.228	A	corp.venbest.com.ua
91.196.159.231	A+PTR	mail.venbest.com.ua
91.196.159.237	A	host-237-159.rnc.com.ua
91.196.159.238	A	host-238-159.rnc.com.ua
91.196.159.255	PTR	host-255-159.rnc.com.ua