Robtex

Up: 81.29.128.0/19
Can't show all results, try to descend to a more specific CIDR
Down left: 81.29.128.0/21
Down right: 81.29.136.0/21
(Some of the IP numbers are capped at 3 entries)

IP	Type	Hostname
81.29.128.1	PTR	host-29-128-1.iqdata.center
81.29.128.27	A	cloud.gk-nt.com
81.29.128.45	PTR	host-29-128-45.iqdata.center
81.29.128.45	A	tvirt.ru
81.29.128.45	A	xn--80aaedjpeabbca2agwqb5b1alv6a4b.xn--p1ai
81.29.128.62	A+PTR	vhm1.lochost.ru
81.29.128.62	A	servercare.ru
81.29.128.62	A	www.bimex-td.ru
81.29.128.102	PTR	host-29-128-102.iqdata.center
81.29.128.102	A	xn--h1aedhejidffj3ipa.xn--p1ai
81.29.128.102	A	xn--80aff5ae.xn--p1ai
81.29.128.134	PTR	host-29-128-134.iqdata.center
81.29.128.134	A	www.mnserver.ru
81.29.128.134	A	mnserver.ru
81.29.128.170	A+PTR	peopleultra.com
81.29.128.195	PTR	rental.tasksforms.com
81.29.128.195	A	www.optovik.com
81.29.128.196	PTR	host-29-128-196.iqdata.center
81.29.128.196	A	tasksforms.com
81.29.128.212	PTR	host-29-128-212.iqdata.center
81.29.128.212	A	farpuff.com
81.29.129.59	PTR	host-29-129-59.iqdata.center
81.29.129.59	A	ns3.rus-call.com
81.29.129.59	A	ns2.rus-call.com
81.29.129.60	PTR	host-29-129-60.iqdata.center
81.29.129.60	A	www.ukr-info.net
81.29.129.117	A	zc.su
81.29.129.135	PTR	host-29-129-135.iqdata.center
81.29.129.135	A	ns3.radhosting.ru
81.29.129.139	PTR	host-29-129-139.iqdata.center
81.29.129.139	A	radhosting.ru
81.29.129.139	A	www.radhosting.ru
81.29.129.198	A	mail.gelios-spb.ru
81.29.129.218	PTR	mail.avtograph.com
81.29.129.218	A	mail.abramat.ru
81.29.129.218	A	mail.pferd-rus.ru
81.29.131.18	PTR	host-29-131-18.iqdata.center
81.29.132.193	A	mail.csihelsinki.com
81.29.134.13	A	serkankilinc.com
81.29.134.13	A	ns1.serkankilinc.com
81.29.134.13	A	mx.serkankilinc.com
81.29.134.22	PTR	host-81-29-134-22.iqdata.center
81.29.134.25	A	mail.pditgroup.com
81.29.134.46	A	ns4.restoran.ru
81.29.134.47	PTR	host-81-29-134-47.iqdata.center
81.29.134.163	PTR	mail.acribia.ru
81.29.138.121	A+PTR	in-tec.spb.ru
81.29.139.66	A	capture.camera
81.29.139.103	PTR	mail.netlas.io
81.29.139.134	PTR	my.it4tech.ru
81.29.140.19	A	ns1.trinity.spb.ru
81.29.143.8	A	bonus8742.com
81.29.143.136	PTR	statesection.termweek.com
81.29.143.161	A	cradle5590.com