Robtex

Up: 91.197.16.0/23
Can't show all results, try to descend to a more specific CIDR
Down left: 91.197.17.0/25
Down right: 91.197.17.128/25
(Some of the IP numbers are capped at 3 entries)

IP	Type	Hostname
91.197.17.4	PTR	hosting.astra.od.ua
91.197.17.5	A+PTR	mx1.astra.od.ua
91.197.17.5	A	astra.od.ua
91.197.17.8	A+PTR	mail.ukrnic.com
91.197.17.8	A	ukrnic.com
91.197.17.8	A	almenda.com
91.197.17.9	A+PTR	ns0.ukrnic.com
91.197.17.9	A	ukrnic.com
91.197.17.9	A	mail.ukrnic.com
91.197.17.10	PTR	host.10.net17.astra.od.ua
91.197.17.10	A	zenit.biz.ua
91.197.17.11	PTR	host.11.net17.astra.od.ua
91.197.17.11	A	spill1001.com
91.197.17.14	A+PTR	voip.astra.od.ua
91.197.17.19	PTR	main.alpha-com.od.ua
91.197.17.19	A	relay2.acs.com.ua
91.197.17.35	PTR	host.35.net17.astra.od.ua
91.197.17.35	A	mail.novemisto.com.ua
91.197.17.36	PTR	host.36.net17.astra.od.ua
91.197.17.40	PTR	host.40.net17.astra.od.ua
91.197.17.40	A	novemisto.com.ua
91.197.17.43	PTR	host-43-net-17.astra.od.ua
91.197.17.46	A+PTR	gavrilovka.com.ua
91.197.17.87	A+PTR	mail2.dovbush.com
91.197.17.93	PTR	host.93.net17.astra.od.ua
91.197.17.93	A	saiodessa.gov.ua
91.197.17.99	PTR	host-99-net-17.astra.od.ua
91.197.17.100	A+PTR	mail3.odysseya.com.ua
91.197.17.102	A	transcareurope.com
91.197.17.180	PTR	hydro.od.ua
91.197.17.201	PTR	host.201.net17.astra.od.ua
91.197.17.201	A	el24.com.ua
91.197.17.201	A	www.el24.com.ua
91.197.17.209	PTR	nas-01.astra.od.ua
91.197.17.229	A+PTR	mail.odessa-auto.od.ua
91.197.17.231	PTR	fch.astra.od.ua
91.197.17.233	PTR	bsss-group.com.ua
91.197.17.233	A	astra.bsss-group.com.ua
91.197.17.234	PTR	host-234-net-17.astra.od.ua
91.197.17.248	A+PTR	italkeramika.com
91.197.17.248	A	mail.italkeramika.com
91.197.17.248	A	mail1.italkeramika.com
91.197.17.250	A+PTR	portal.bslink.net
91.197.17.250	A	mail2.kotlyar.me
91.197.17.250	A	mail.gatelink.in
91.197.17.253	PTR	host-253-net-17.astra.od.ua